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Laha A, Yoshida S, Marques Dos Santos Vieira F, Yi H, Lee SH, Ayyagari SVG, Guan Y, Min L, Gonzalez Jimenez J, Miao L, Graf D, Sarker S, Xie W, Alem N, Gopalan V, Chang CZ, Dabo I, Mao Z. High-entropy engineering of the crystal and electronic structures in a Dirac material. Nat Commun 2024; 15:3532. [PMID: 38670964 DOI: 10.1038/s41467-024-47781-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Dirac and Weyl semimetals are a central topic of contemporary condensed matter physics, and the discovery of new compounds with Dirac/Weyl electronic states is crucial to the advancement of topological materials and quantum technologies. Here we show a widely applicable strategy that uses high configuration entropy to engineer relativistic electronic states. We take the AMnSb2 (A = Ba, Sr, Ca, Eu, and Yb) Dirac material family as an example and demonstrate that mixing of Ba, Sr, Ca, Eu and Yb at the A site generates the compound (Ba0.38Sr0.14Ca0.16Eu0.16Yb0.16)MnSb2 (denoted as A5MnSb2), giving access to a polar structure with a space group that is not present in any of the parent compounds. A5MnSb2 is an entropy-stabilized phase that preserves its linear band dispersion despite considerable lattice disorder. Although both A5MnSb2 and AMnSb2 have quasi-two-dimensional crystal structures, the two-dimensional Dirac states in the pristine AMnSb2 evolve into a highly anisotropic quasi-three-dimensional Dirac state triggered by local structure distortions in the high-entropy phase, which is revealed by Shubnikov-de Haas oscillations measurements.
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Affiliation(s)
- Antu Laha
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Suguru Yoshida
- Department of Physics, Pennsylvania State University, University Park, PA, USA.
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA, USA.
| | | | - Hemian Yi
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Seng Huat Lee
- Department of Physics, Pennsylvania State University, University Park, PA, USA
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA, USA
| | | | - Yingdong Guan
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Lujin Min
- Department of Physics, Pennsylvania State University, University Park, PA, USA
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA
| | | | - Leixin Miao
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA
| | - David Graf
- National High Magnetic Field Laboratory, Tallahassee, FL, USA
| | - Saugata Sarker
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA
| | - Weiwei Xie
- Department of Chemistry, Michigan State University, East Lansing, MI, USA
| | - Nasim Alem
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA
| | - Venkatraman Gopalan
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA
| | - Cui-Zu Chang
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Ismaila Dabo
- Department of Physics, Pennsylvania State University, University Park, PA, USA.
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA.
| | - Zhiqiang Mao
- Department of Physics, Pennsylvania State University, University Park, PA, USA.
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA, USA.
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA.
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2
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Zhang Y, Murthy C, Kafle TR, You W, Shi X, Min L, Wang HH, Li N, Gopalan V, Mao Z, Rossnagel K, Yang L, Kapteyn H, Nandkishore R, Murnane M. Correction to "Bipolaronic Nature of the Pseudogap in Quasi-One-Dimensional (TaSe 4) 2I Revealed via Weak Photoexcitation". Nano Lett 2024; 24:4702. [PMID: 38564655 DOI: 10.1021/acs.nanolett.4c01378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
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3
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Yu C, Yu Y, Lu Y, Quan K, Mao Z, Zheng Y, Qin L, Xia D. UiO-66/AgNPs Coating for Dental Implants in Preventing Bacterial Infections. J Dent Res 2024:220345241229646. [PMID: 38581213 DOI: 10.1177/00220345241229646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2024] Open
Abstract
Titanium (Ti)-based biomaterials lack inherent antimicrobial activities, and the dental plaque formed on the implant surface is one of the main risk factors for implant infections. Construction of an antibacterial surface can effectively prevent implant infections and enhance implant success. Silver nanoparticles (AgNPs) exhibit broad antibacterial activity and a low tendency to induce drug resistance, but AgNPs easily self-aggregate in the aqueous environment, which significantly impairs their antibacterial activity. In this study, UiO-66/AgNP (U/A) nanocomposite was prepared, where zirconium metal-organic frameworks (UiO-66) were employed as the confinement matrix to control the particle size and prevent aggregation of AgNPs. The bactericidal activity of U/A against methicillin-resistant Staphylococcus aureus and Escherichia coli increased nearly 75.51 and 484.50 times compared with individually synthesized Ag. The antibacterial mechanism can be attributed to the enhanced membrane rupture caused by the ultrafine AgNPs on UiO-66, leading to protein leakage and generation of intracellular reactive oxygen species. Then, U/A was loaded onto Ti substrates (Ti-U/A) by using self-assembly deposition methods to construct an antibacterial surface coating. Ti-U/A exhibited excellent antibacterial activities and desired biocompatibility both in vitro and in vivo. The U/A nanocomposite coating technique is thus expected to be used as a promising surface modification strategy for Ti-based dental implants for preventing dental implant infections.
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Affiliation(s)
- C Yu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- School of Environmental and Material Engineering, Yantai University, Yantai, Shandong, China
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Y Yu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Y Lu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - K Quan
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Z Mao
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Y Zheng
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - L Qin
- School of Environmental and Material Engineering, Yantai University, Yantai, Shandong, China
| | - D Xia
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
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4
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Chong SK, Lei C, Cheng Y, Lee SH, Mao Z, MacDonald AH, Wang KL. Exchange-Driven Chern States in High-Mobility Intrinsic Magnetic Topological Insulators. Phys Rev Lett 2024; 132:146601. [PMID: 38640375 DOI: 10.1103/physrevlett.132.146601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/25/2024] [Accepted: 03/12/2024] [Indexed: 04/21/2024]
Abstract
The layer-dependent Chern number (C) in MnBi_{2}Te_{4} is characterized by the presence of a Weyl semimetal state in the ferromagnetic coupling. However, the influence of a key factor, namely, the exchange coupling, remains unexplored. This study focuses on characterizing the C=2 state in MnBi_{2}Te_{4}, which is classified as a higher C state resulting from the anomalous n=0 Landau levels (LLs). Our findings demonstrate that the exchange coupling parameter strongly influences the formation of this Chern state, leading to a competition between the C=1 and 2 states. Moreover, the emergence of odd-even LL sequences, resulting from the breaking of LL degeneracy, provides compelling evidence for the strong exchange coupling strength. These findings highlight the significance of the exchange coupling in understanding the behavior of Chern states and LLs in magnetic quantum systems.
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Affiliation(s)
- Su Kong Chong
- Department of Electrical and Computer Engineering, University of California, Los Angeles, California 90095, USA
| | - Chao Lei
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA
| | - Yang Cheng
- Department of Electrical and Computer Engineering, University of California, Los Angeles, California 90095, USA
| | - Seng Huat Lee
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Zhiqiang Mao
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Allan H MacDonald
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA
| | - Kang L Wang
- Department of Electrical and Computer Engineering, University of California, Los Angeles, California 90095, USA
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5
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Huang Z, Yi H, Kaplan D, Min L, Tan H, Chan YT, Mao Z, Yan B, Chang CZ, Wu W. Hidden non-collinear spin-order induced topological surface states. Nat Commun 2024; 15:2937. [PMID: 38580628 PMCID: PMC10997621 DOI: 10.1038/s41467-024-47340-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 03/28/2024] [Indexed: 04/07/2024] Open
Abstract
Rare-earth monopnictides are a family of materials simultaneously displaying complex magnetism, strong electronic correlation, and topological band structure. The recently discovered emergent arc-like surface states in these materials have been attributed to the multi-wave-vector antiferromagnetic order, yet the direct experimental evidence has been elusive. Here we report observation of non-collinear antiferromagnetic order with multiple modulations using spin-polarized scanning tunneling microscopy. Moreover, we discover a hidden spin-rotation transition of single-to-multiple modulations 2 K below the Néel temperature. The hidden transition coincides with the onset of the surface states splitting observed by our angle-resolved photoemission spectroscopy measurements. Single modulation gives rise to a band inversion with induced topological surface states in a local momentum region while the full Brillouin zone carries trivial topological indices, and multiple modulation further splits the surface bands via non-collinear spin tilting, as revealed by our calculations. The direct evidence of the non-collinear spin order in NdSb not only clarifies the mechanism of the emergent topological surface states, but also opens up a new paradigm of control and manipulation of band topology with magnetism.
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Affiliation(s)
- Zengle Huang
- Department of Physics & Astronomy, Rutgers University, Piscataway, NJ, 08854, USA
| | - Hemian Yi
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Daniel Kaplan
- Department of Physics & Astronomy, Rutgers University, Piscataway, NJ, 08854, USA
- Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel
| | - Lujin Min
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Hengxin Tan
- Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel
| | - Ying-Ting Chan
- Department of Physics & Astronomy, Rutgers University, Piscataway, NJ, 08854, USA
| | - Zhiqiang Mao
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Binghai Yan
- Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel
| | - Cui-Zu Chang
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Weida Wu
- Department of Physics & Astronomy, Rutgers University, Piscataway, NJ, 08854, USA.
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6
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Chong SK, Cheng Y, Man H, Lee SH, Wang Y, Dai B, Tanabe M, Yang TH, Mao Z, Moler KA, Wang KL. Intrinsic exchange biased anomalous Hall effect in an uncompensated antiferromagnet MnBi 2Te 4. Nat Commun 2024; 15:2881. [PMID: 38570519 PMCID: PMC10991375 DOI: 10.1038/s41467-024-46689-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 03/06/2024] [Indexed: 04/05/2024] Open
Abstract
Achieving spin-pinning at the interface of hetero-bilayer ferromagnet/antiferromagnet structures in conventional exchange bias systems can be challenging due to difficulties in interface control and the weakening of spin-pinning caused by poor interface quality. In this work, we propose an alternative approach to stabilize the exchange interaction at the interface of an uncompensated antiferromagnet by utilizing a gradient of interlayer exchange coupling. We demonstrate this exchange interaction through a designed field training protocol in the odd-layer topological antiferromagnet MnBi2Te4. Our results reveal a remarkable field-trained exchange bias of up to ~ 400 mT, which exhibits high repeatability and can be easily reset by a large training field. Notably, this field-trained exchange bias effect persists even with zero-field initialization, presenting a stark contrast to the traditional field-cooled exchange bias. The highly tunable exchange bias observed in this single antiferromagnet compound, without the need for an additional magnetic layer, provides valuable insight into the exchange interaction mechanism. These findings pave the way for the systematic design of topological antiferromagnetic spintronics.
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Affiliation(s)
- Su Kong Chong
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA.
| | - Yang Cheng
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Huiyuan Man
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, 94305, USA
- Stanford Nano Shared Facilities, Stanford University, Stanford, CA, 94305, USA
| | - Seng Huat Lee
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yu Wang
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Bingqian Dai
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Masaki Tanabe
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Ting-Hsun Yang
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Zhiqiang Mao
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Kathryn A Moler
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, 94305, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
- Department of Physics and Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - Kang L Wang
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA.
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7
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Paske T, Guan Y, Wang C, Moore C, Mao Z, Gui X. Crystallographic Disorder and Strong Magnetic Anisotropy in Dy 3Pt 2Sb 4.48. Inorg Chem 2024; 63:3648-3655. [PMID: 38353046 PMCID: PMC10900285 DOI: 10.1021/acs.inorgchem.3c01850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 01/20/2024] [Accepted: 01/30/2024] [Indexed: 02/27/2024]
Abstract
We report the crystal growth and characterization of a rare-earth-containing material, Dy3.00(1)Pt2Sb4.48(2). This compound possesses a similar structure to the previously reported Y3Pt4Ge6, but it lacks two layers of Pt atoms. Crystallographic disorder was found in Dy3.00(1)Pt2Sb4.48(2). Additionally, the Dy-Dy framework was found to have both square net and triangular lattices. Dy3.00(1)Pt2Sb4.48(2)8 was determined to be antiferromagnetically ordered around ∼15 K while a competing antiferromagnetic sublattice also exists at lower temperature. Strong magnetic anisotropy was observed, and several metamagnetic transitions were seen in the hysteresis loops. Furthermore, the Curie-Weiss fitting revealed an unusually small effective moment of Dy, which is far below the expected value of Dy3+ (10.65 μB). This material might provide a new platform to study the relationship between crystallographic disorder and magnetism.
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Affiliation(s)
- Terry Paske
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Yingdong Guan
- Department
of Physics, Pennsylvania State University, University Park, Pennsylvania 16801, United States
| | - Chaoguo Wang
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Curtis Moore
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United States
| | - Zhiqiang Mao
- Department
of Physics, Pennsylvania State University, University Park, Pennsylvania 16801, United States
| | - Xin Gui
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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Gong J, Wang X, Fan HE, Wang J, Zhang F, Mao Z. Engineering an activatable fluorescent probe for studying ONOO - in pyroptotic process. Talanta 2024; 267:125216. [PMID: 37722344 DOI: 10.1016/j.talanta.2023.125216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/06/2023] [Accepted: 09/14/2023] [Indexed: 09/20/2023]
Abstract
Pyroptosis, a recently discovered form of programmed cell death, plays a pivotal role in oncological treatment. Howbeit, the mechanisms underlying pyroptosis in tumor treatment remain unclear. Previous research has demonstrated that the occurrence of pyroptosis generally accompanies a surge of reactive oxygen species (ROS) generation, with ONOO- being one of these ROS and closely linked to numerous diseases. Therefore, it is imperative to investigate the potential association between ONOO- and pyroptosis. Herein, a highly sensitive and rapidly responsive near-infrared (NIR) probe, Rd700-PN, is fabricated for exploring unrevealed relationships between ONOO- and pyroptosis. We successfully harness Rd700-PN to detect ONOO- fluctuation during cellular pyroptosis for the first time. Furthermore, the results demonstrate that Rd700-PN can scout the chemotherapeutic drug's induction ability of tumor pyroptosis in vivo. Notably, this study provides an excellent means to shed light on the correlation between ONOO- and pyroptosis and to screen antitumor drugs activating pyroptosis.
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Affiliation(s)
- Jiankang Gong
- College of Health Science and Engineering, Hubei University, Wuhan, 430062, China
| | - Xiaoyu Wang
- College of Health Science and Engineering, Hubei University, Wuhan, 430062, China
| | - Hai-En Fan
- College of Health Science and Engineering, Hubei University, Wuhan, 430062, China
| | - Jiaxuan Wang
- College of Health Science and Engineering, Hubei University, Wuhan, 430062, China
| | - Fan Zhang
- College of Health Science and Engineering, Hubei University, Wuhan, 430062, China.
| | - Zhiqiang Mao
- College of Health Science and Engineering, Hubei University, Wuhan, 430062, China.
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Fu Z, Samarawickrama PI, Zhu Y, Mao Z, Wang W, Watanabe K, Taniguchi T, Tang J, Ackerman J, Tian J. Nonvolatile Memristive Effect in Few-Layer CrI 3 Driven by Electrostatic Gating. Nano Lett 2023; 23:11866-11873. [PMID: 38079362 DOI: 10.1021/acs.nanolett.3c03926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
The potential of memristive devices for applications in nonvolatile memory and neuromorphic computing has sparked considerable interest, particularly in exploring memristive effects in two-dimensional (2D) magnetic materials. However, the progress in developing nonvolatile, magnetic field-free memristive devices using 2D magnets has been limited. In this work, we report an electrostatic-gating-induced nonvolatile memristive effect in CrI3-based tunnel junctions. The few-layer CrI3-based tunnel junction manifests notable hysteresis in its tunneling resistance as a function of gate voltage. We further engineered a nonvolatile memristor using the CrI3 tunneling junction with low writing power and at zero magnetic field. We show that the hysteretic transport observed is not a result of trivial effects or inherent magnetic properties of CrI3. We propose a potential association between the memristive effect and the newly predicted ferroelectricity in CrI3 via gating-induced Jahn-Teller distortion. Our work illuminates the potential of 2D magnets in developing next-generation advanced computing technologies.
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Affiliation(s)
- ZhuangEn Fu
- Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Piumi I Samarawickrama
- Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Yanglin Zhu
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Zhiqiang Mao
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Wenyong Wang
- Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Kenji Watanabe
- Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Takashi Taniguchi
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Jinke Tang
- Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071, United States
| | - John Ackerman
- Department of Chemical and Biomedical Engineering, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Jifa Tian
- Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071, United States
- Center for Quantum Information Science and Engineering, University of Wyoming, Laramie, Wyoming 82071, United States
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Guan Y, Miao L, He J, Ning J, Chen Y, Xie W, Sun J, Gopalan V, Zhu J, Wang X, Alem N, Zhang Q, Mao Z. Correction to "Layered Semiconductor Cr 0.32Ga 0.68Te 2.33 with Concurrent Broken Inversion Symmetry and Ferromagnetism: A Bulk Ferrovalley Material Candidate". J Am Chem Soc 2023; 145:21696. [PMID: 37733935 DOI: 10.1021/jacs.3c09488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
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11
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Zhang Y, Murthy C, Kafle TR, You W, Shi X, Min L, Wang HH, Li N, Gopalan V, Mao Z, Rossnagel K, Yang L, Kapteyn H, Nandkishore R, Murnane M. Bipolaronic Nature of the Pseudogap in Quasi-One-Dimensional (TaSe 4) 2I Revealed via Weak Photoexcitation. Nano Lett 2023; 23:8392-8398. [PMID: 37682637 DOI: 10.1021/acs.nanolett.3c01078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
The origin of the pseudogap in many strongly correlated materials has been a longstanding puzzle. Here, we present experimental evidence that many-body interactions among small Holstein polarons, i.e., the formation of bipolarons, are primarily responsible for the pseudogap in (TaSe4)2I. After weak photoexcitation of the material, we observe the appearance of both dispersive (single-particle bare band) and flat bands (single-polaron sub-bands) in the gap by using time- and angle-resolved photoemission spectroscopy. Based on Monte Carlo simulations of the Holstein model, we propose that the melting of pseudogap and emergence of new bands originate from a bipolaron to single-polaron crossover. We also observe dramatically different relaxation times for the excited in-gap states in (TaSe4)2I (∼600 fs) compared with another 1D material Rb0.3MoO3 (∼60 fs), which provides a new method for distinguishing between pseudogaps induced by polaronic or Luttinger-liquid many-body interactions.
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Affiliation(s)
- Yingchao Zhang
- Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Chaitanya Murthy
- Department of Physics, Stanford University, Stanford, California 94305, United States
| | - Tika R Kafle
- Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Wenjing You
- Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Xun Shi
- Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Lujin Min
- Materials Research Institute and Department of Materials Science & Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Huaiyu Hugo Wang
- Materials Research Institute and Department of Materials Science & Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Na Li
- Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Venkatraman Gopalan
- Materials Research Institute and Department of Materials Science & Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Zhiqiang Mao
- Materials Research Institute and Department of Materials Science & Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kai Rossnagel
- Institute of Experimental and Applied Physics, Kiel University, D-24098 Kiel, Germany
- Ruprecht Haensel Laboratory, Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg, Germany
| | - Lexian Yang
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - Henry Kapteyn
- Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, United States
- KMLabs Inc., Boulder, Colorado 80301, United States
| | - Rahul Nandkishore
- Department of Physics and Center for Theory of Quantum Matter, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Margaret Murnane
- Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, United States
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Wang HH, Xiong Y, Padma H, Wang Y, Wang Z, Claes R, Brunin G, Min L, Zu R, Wetherington MT, Wang Y, Mao Z, Hautier G, Chen LQ, Dabo I, Gopalan V. Strong electron-phonon coupling driven pseudogap modulation and density-wave fluctuations in a correlated polar metal. Nat Commun 2023; 14:5769. [PMID: 37723139 PMCID: PMC10507017 DOI: 10.1038/s41467-023-41460-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 09/01/2023] [Indexed: 09/20/2023] Open
Abstract
There is tremendous interest in employing collective excitations of the lattice, spin, charge, and orbitals to tune strongly correlated electronic phenomena. We report such an effect in a ruthenate, Ca3Ru2O7, where two phonons with strong electron-phonon coupling modulate the electronic pseudogap as well as mediate charge and spin density wave fluctuations. Combining temperature-dependent Raman spectroscopy with density functional theory reveals two phonons, B2P and B2M, that are strongly coupled to electrons and whose scattering intensities respectively dominate in the pseudogap versus the metallic phases. The B2P squeezes the octahedra along the out of plane c-axis, while the B2M elongates it, thus modulating the Ru 4d orbital splitting and the bandwidth of the in-plane electron hopping; Thus, B2P opens the pseudogap, while B2M closes it. Moreover, the B2 phonons mediate incoherent charge and spin density wave fluctuations, as evidenced by changes in the background electronic Raman scattering that exhibit unique symmetry signatures. The polar order breaks inversion symmetry, enabling infrared activity of these phonons, paving the way for coherent light-driven control of electronic transport.
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Affiliation(s)
- Huaiyu Hugo Wang
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA.
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
| | - Yihuang Xiong
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
- Thayer School of Engineering, Dartmouth College, 14 Engineering Drive, Hanover, NH, 03755, USA
| | - Hari Padma
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Yi Wang
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Ziqi Wang
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Romain Claes
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Chemin des Étoiles 8, B-1348, Louvain-la-Neuve, Belgium
| | | | - Lujin Min
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Rui Zu
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Maxwell T Wetherington
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Yu Wang
- 2D Crystal Consortium, Material Research Institute, Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, Pennsylvania State University, University Park, PA, 16802, USA
| | - Zhiqiang Mao
- 2D Crystal Consortium, Material Research Institute, Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, Pennsylvania State University, University Park, PA, 16802, USA
| | - Geoffroy Hautier
- Thayer School of Engineering, Dartmouth College, 14 Engineering Drive, Hanover, NH, 03755, USA
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Chemin des Étoiles 8, B-1348, Louvain-la-Neuve, Belgium
| | - Long-Qing Chen
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Ismaila Dabo
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA.
| | - Venkatraman Gopalan
- Materials Research Institute and Department of Material Science & Engineering, Pennsylvania State University, University Park, PA, 16802, USA.
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Chong SK, Lei C, Lee SH, Jaroszynski J, Mao Z, MacDonald AH, Wang KL. Anomalous Landau quantization in intrinsic magnetic topological insulators. Nat Commun 2023; 14:4805. [PMID: 37558682 PMCID: PMC10412595 DOI: 10.1038/s41467-023-40383-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 07/21/2023] [Indexed: 08/11/2023] Open
Abstract
The intrinsic magnetic topological insulator, Mn(Bi1-xSbx)2Te4, has been identified as a Weyl semimetal with a single pair of Weyl nodes in its spin-aligned strong-field configuration. A direct consequence of the Weyl state is the layer dependent Chern number, [Formula: see text]. Previous reports in MnBi2Te4 thin films have shown higher [Formula: see text] states either by increasing the film thickness or controlling the chemical potential. A clear picture of the higher Chern states is still lacking as data interpretation is further complicated by the emergence of surface-band Landau levels under magnetic fields. Here, we report a tunable layer-dependent [Formula: see text] = 1 state with Sb substitution by performing a detailed analysis of the quantization states in Mn(Bi1-xSbx)2Te4 dual-gated devices-consistent with calculations of the bulk Weyl point separation in the doped thin films. The observed Hall quantization plateaus for our thicker Mn(Bi1-xSbx)2Te4 films under strong magnetic fields can be interpreted by a theory of surface and bulk spin-polarised Landau level spectra in thin film magnetic topological insulators.
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Affiliation(s)
- Su Kong Chong
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA.
| | - Chao Lei
- Department of Physics, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Seng Huat Lee
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Jan Jaroszynski
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - Zhiqiang Mao
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Allan H MacDonald
- Department of Physics, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Kang L Wang
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA.
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Zhou Z, Wang X, Wang Z, Wu J, Zhang F, Mao Z. Evaluation of peroxynitrite fluxes in inflammatory mice with a ratiometric fluorescence probe. Spectrochim Acta A Mol Biomol Spectrosc 2023; 294:122503. [PMID: 36848859 DOI: 10.1016/j.saa.2023.122503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/03/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Inflammation is a critical physiological process in the human body, which is closely related to numerous disorders and cancers. ONOO- is generated and functionalized in the inflamed process, but the roles of ONOO- are still blurred. To illuminate the roles of ONOO-, we fabricated an intramolecular charge transfer (ICT)-based fluorescence probe, HDM-Cl-PN, for the ratiometric determination of ONOO- in the inflamed mouse model. The probe displayed a gradual fluorescence increase at 676 nm and a fluorescence drop at 590 nm toward 0-10.5 μM ONOO-, and the ratio of 676 nm fluorescence and 590 nm fluorescence varied from 0.7 to 24.7. The significantly changed ratio and favorable selectivity ensure the sensitive detection of subtle changes in cellular ONOO-. Thanks to the excellent sensing performance, HDM-Cl-PNin vivo ratiometrically visualized ONOO- fluctuations in the LPS-triggered inflammatory process. Overall, this work not only expatiated the rational design for a ratiometric ONOO- probe but also built a bridge to investigate the connections between ONOO- and inflammation in living mice.
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Affiliation(s)
- Zhenhua Zhou
- College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Xiaoyu Wang
- College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Zhao Wang
- Wuhan Business University, Wuhan 430056, China
| | - Jiao Wu
- College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Fan Zhang
- College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Zhiqiang Mao
- College of Health Science and Engineering, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
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Mao Z, Rha H, Kim J, You X, Zhang F, Tao W, Kim JS. THQ-Xanthene: An Emerging Strategy to Create Next-Generation NIR-I/II Fluorophores. Adv Sci (Weinh) 2023; 10:e2301177. [PMID: 37114796 PMCID: PMC10288261 DOI: 10.1002/advs.202301177] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/13/2023] [Indexed: 06/19/2023]
Abstract
Near-infrared fluorescence imaging is vital for exploring the biological world. The short emissions (<650 nm) and small Stokes shifts (<30 nm) of current xanthene dyes obstruct their biological applications since a long time. Recently, a potent and universal THQ structural modification technique that shifts emission to the NIR-I/II range and enables a substantial Stokes shift (>100 nm) for THQ-modified xanthene dyes is established. Thus, a timely discussion of THQ-xanthene and its applications is extensive. Hence, the advent, working principles, development trajectory, and biological applications of THQ-xanthene dyes, especially in the fields of fluorescence probe-based sensing and imaging, cancer theranostics, and super-resolution imaging, are introduced. It is envisioned that the THQ modification tactic is a simple yet exceptional approach to upgrade the performance of conventional xanthene dyes. THQ-xanthene will advance the strides of xanthene-based potentials in early fluorescent diagnosis of diseases, cancer theranostics, and imaging-guided surgery.
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Affiliation(s)
- Zhiqiang Mao
- College of Health Science and EngineeringCollege of Chemistry and Chemical EngineeringHubei UniversityWuhan430062China
- Department of ChemistryKorea UniversitySeoul02841South Korea
| | - Hyeonji Rha
- Department of ChemistryKorea UniversitySeoul02841South Korea
| | - Jungryun Kim
- Department of ChemistryKorea UniversitySeoul02841South Korea
| | - Xinru You
- Center for Nanomedicine and Department of AnesthesiologyBrigham and Women's HospitalHarvard Medical SchoolBostonMA02115USA
| | - Fan Zhang
- College of Health Science and EngineeringCollege of Chemistry and Chemical EngineeringHubei UniversityWuhan430062China
| | - Wei Tao
- Center for Nanomedicine and Department of AnesthesiologyBrigham and Women's HospitalHarvard Medical SchoolBostonMA02115USA
| | - Jong Seung Kim
- Department of ChemistryKorea UniversitySeoul02841South Korea
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16
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Lin YC, Torsi R, Younas R, Hinkle CL, Rigosi AF, Hill HM, Zhang K, Huang S, Shuck CE, Chen C, Lin YH, Maldonado-Lopez D, Mendoza-Cortes JL, Ferrier J, Kar S, Nayir N, Rajabpour S, van Duin ACT, Liu X, Jariwala D, Jiang J, Shi J, Mortelmans W, Jaramillo R, Lopes JMJ, Engel-Herbert R, Trofe A, Ignatova T, Lee SH, Mao Z, Damian L, Wang Y, Steves MA, Knappenberger KL, Wang Z, Law S, Bepete G, Zhou D, Lin JX, Scheurer MS, Li J, Wang P, Yu G, Wu S, Akinwande D, Redwing JM, Terrones M, Robinson JA. Recent Advances in 2D Material Theory, Synthesis, Properties, and Applications. ACS Nano 2023. [PMID: 37219929 DOI: 10.1021/acsnano.2c12759] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two-dimensional (2D) material research is rapidly evolving to broaden the spectrum of emergent 2D systems. Here, we review recent advances in the theory, synthesis, characterization, device, and quantum physics of 2D materials and their heterostructures. First, we shed insight into modeling of defects and intercalants, focusing on their formation pathways and strategic functionalities. We also review machine learning for synthesis and sensing applications of 2D materials. In addition, we highlight important development in the synthesis, processing, and characterization of various 2D materials (e.g., MXnenes, magnetic compounds, epitaxial layers, low-symmetry crystals, etc.) and discuss oxidation and strain gradient engineering in 2D materials. Next, we discuss the optical and phonon properties of 2D materials controlled by material inhomogeneity and give examples of multidimensional imaging and biosensing equipped with machine learning analysis based on 2D platforms. We then provide updates on mix-dimensional heterostructures using 2D building blocks for next-generation logic/memory devices and the quantum anomalous Hall devices of high-quality magnetic topological insulators, followed by advances in small twist-angle homojunctions and their exciting quantum transport. Finally, we provide the perspectives and future work on several topics mentioned in this review.
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Affiliation(s)
- Yu-Chuan Lin
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Riccardo Torsi
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Rehan Younas
- Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Christopher L Hinkle
- Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Albert F Rigosi
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Heather M Hill
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Kunyan Zhang
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Shengxi Huang
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Christopher E Shuck
- A.J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Chen Chen
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Yu-Hsiu Lin
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
| | - Daniel Maldonado-Lopez
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
| | - Jose L Mendoza-Cortes
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
| | - John Ferrier
- Department of Physics and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Swastik Kar
- Department of Physics and Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Nadire Nayir
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, Karamanoglu Mehmet University, Karaman 70100, Turkey
| | - Siavash Rajabpour
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Adri C T van Duin
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Xiwen Liu
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jie Jiang
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Jian Shi
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Wouter Mortelmans
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
| | - Rafael Jaramillo
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
| | - Joao Marcelo J Lopes
- Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e.V., Hausvogteiplaz 5-7, 10117 Berlin, Germany
| | - Roman Engel-Herbert
- Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e.V., Hausvogteiplaz 5-7, 10117 Berlin, Germany
| | - Anthony Trofe
- Department of Nanoscience, Joint School of Nanoscience & Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Tetyana Ignatova
- Department of Nanoscience, Joint School of Nanoscience & Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Seng Huat Lee
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Zhiqiang Mao
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Leticia Damian
- Department of Physics, University of North Texas, Denton, Texas 76203, United States
| | - Yuanxi Wang
- Department of Physics, University of North Texas, Denton, Texas 76203, United States
| | - Megan A Steves
- Institute for Quantitative Biosciences, University of California Berkeley, Berkeley, California 94720, United States
| | - Kenneth L Knappenberger
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Zhengtianye Wang
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Stephanie Law
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - George Bepete
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for Atomically Thin Multifunctional Coatings, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Da Zhou
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jiang-Xiazi Lin
- Department of Physics, Brown University, Providence, Rhode Island 02906, United States
| | - Mathias S Scheurer
- Institute for Theoretical Physics, University of Innsbruck, Innsbruck A-6020, Austria
| | - Jia Li
- Department of Physics, Brown University, Providence, Rhode Island 02906, United States
| | - Pengjie Wang
- Department of Physics, Princeton University, Princeton, New Jersey 08540, United States
| | - Guo Yu
- Department of Physics, Princeton University, Princeton, New Jersey 08540, United States
- Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08540, United States
| | - Sanfeng Wu
- Department of Physics, Princeton University, Princeton, New Jersey 08540, United States
| | - Deji Akinwande
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Microelectronics Research Center, The University of Texas, Austin, Texas 78758, United States
| | - Joan M Redwing
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Mauricio Terrones
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for Atomically Thin Multifunctional Coatings, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Research Initiative for Supra-Materials and Global Aqua Innovation Center, Shinshu University, Nagano 380-8553, Japan
| | - Joshua A Robinson
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for Atomically Thin Multifunctional Coatings, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Katzbaer RR, Vincent WM, Mao Z, Schaak RE. Synthesis and Magnetic, Optical, and Electrocatalytic Properties of High-Entropy Mixed-Metal Tungsten and Molybdenum Oxides. Inorg Chem 2023; 62:7843-7852. [PMID: 37163751 DOI: 10.1021/acs.inorgchem.3c00541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
High-entropy oxides (HEOs) are of interest for their unique physical and chemical properties. Significant lattice distortions, strain, and tolerance for high-vacancy concentrations set HEOs apart from single-metal or mixed-metal oxides. Herein, we synthesized and characterized the structures and compositions, along with the optical, magnetic, and electrocatalytic properties, of two families of high-entropy mixed-metal tungsten and molybdenum oxides, AWO4 and B2Mo3O8, where A and B are 3d transition metals. The HEOs A6WO4 (A = Mn, Fe, Co, Ni, Cu, and Zn) and B25Mo3O8 (B = Mn, Fe, Co, Ni, and Zn), as well as all accessible single-metal AWO4 and B2Mo3O8 parent compounds, were synthesized using high-temperature solid-state methods. X-ray photoelectron spectroscopy analysis of the surfaces revealed that the HEOs largely had the metal oxidation states expected from the bulk chemical formulas, but in some cases they were different than in the parent compounds. A6WO4 exhibited antiferromagnetic (AFM) ordering with a Néel temperature of 30 K, which is less than the average of its AFM parent compounds, and had a narrow band gap of 0.24 eV, which is much lower than all of its parent compounds. B25Mo3O8 was paramagnetic, despite the existence of AFM and ferromagnetic ordering in several of its parent compounds and had no observable band gap, which is analogous to its parent compounds. Both A6WO4 and B25Mo3O8 exhibited superior catalytic activity relative to the parent compounds for the oxygen evolution reaction, the oxidation half reaction of overall water splitting, under alkaline conditions, based on the overpotential required to reach the benchmark surface area normalized current density. Consistent with literature predictions of OER durability for ternary tungsten and molybdenum oxides, A6WO4 and B25Mo3O8 also exhibited stable performance without significant dissolution during 10 h stability experiments at a constant current.
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Affiliation(s)
- Rowan R Katzbaer
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - William M Vincent
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Zhiqiang Mao
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Raymond E Schaak
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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18
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Huang X, Mao Z, Li B, Hu M, Wang P, Ding L. 94P Neoadjuvant tislelizumab combined with (nab)-paclitaxel plus platinum-based chemotherapy for patients with stage IIA–IIIB squamous NSCLC: A real-world retrospective study. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00349-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Fan C, Wei D, Wang L, Liu P, Fan K, Nie L, Liu X, Hou J, Huo W, Li L, Li X, Li W, Wang C, Mao Z. The association of serum testosterone with dyslipidemia is mediated by obesity: the Henan Rural Cohort Study. J Endocrinol Invest 2023; 46:679-686. [PMID: 36219315 DOI: 10.1007/s40618-022-01911-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/24/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND AND AIMS This study aimed to evaluate the relationships of serum testosterone with dyslipidemia and blood lipid levels and test whether obesity mediated these associations by gender in Chinese rural population. METHODS AND RESULTS A total of 6150 subjects were finally analyzed in this study. Serum testosterone for each subject was detected by liquid chromatography equipped with tandem mass spectrometry. Logistic regression and linear regression were employed to evaluate the associations of serum testosterone with the prevalence of dyslipidemia and blood lipid levels. Mediation analysis was conducted to identify the mediation effects of obesity on the relationship between serum testosterone and dyslipidemia. After adjusting for multiple confounders, per unit change in serum ln-testosterone levels was associated with a decreased prevalent dyslipidemia in men (odds ratio (OR): 0.785, 95% confidence interval (CI) (0.708, 0.871)). Males with the levels of serum testosterone in the third or fourth quartiles had a 49.4% (OR: 0.506, 95% CI 0.398, 0.644) or 67.1% (OR: 0.329, 95% CI 0.253, 0.428) significantly lower odds of prevalence of dyslipidemia. In addition, a onefold increase in ln-testosterone was related to a 0.043 mmol/L (95% CI 0.028, 0.059) increase in high-density lipoprotein cholesterol (HDL-C) in men. Results of the mediation analysis suggested that obesity played a partial role in the association of testosterone with dyslipidemia in men. CONCLUSIONS These findings suggested that serum testosterone levels were negatively associated with lipid levels and prevalent dyslipidemia, and obesity mediated the effects of serum testosterone on dyslipidemia in men, implying that obesity prevention should be highlighted to decrease the prevalence of dyslipidemia related to changes in testosterone levels.
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Affiliation(s)
- C Fan
- Department of Hypertension, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan, People's Republic of China
| | - D Wei
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - L Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - P Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - K Fan
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - L Nie
- Department of Occupational and Environmental Health Sciences, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - X Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - J Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - W Huo
- Department of Occupational and Environmental Health Sciences, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - L Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - X Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - W Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - C Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - Z Mao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China.
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20
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Li S, Wang P, Ye M, Yang K, Cheng D, Mao Z, He L, Liu Z. Cysteine-Activatable Near-Infrared Fluorescent Probe for Dual-Channel Tracking Lipid Droplets and Mitochondria in Epilepsy. Anal Chem 2023; 95:5133-5141. [PMID: 36893258 DOI: 10.1021/acs.analchem.3c00226] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Dual-channel fluorescent probes could respond to a specific target and emit different wavelengths of fluorescence before and after the response. Such probes could alleviate the influence caused by the variation of the probe concentration, excitation intensity, and so on. However, for most dual-channel fluorescent probes, the probe and fluorophore faced spectral overlap, which reduced sensitivity and accuracy. Herein, we introduced a cysteine (Cys)-responsive and near-infrared (NIR) emissive AIEgen (named TSQC) with good biocompatibility to dual-channel monitor Cys in mitochondria and lipid droplets (LDs) during cell apoptosis through wash-free fluorescence bio-imaging. TSQC can label mitochondria with bright fluorescence around 750 nm, and after reacting with Cys, the reaction product TSQ could spontaneously target LDs with emissions around 650 nm. Such spatially separated dual-channel fluorescence responses could significantly improve detection sensitivity and accuracy. Furthermore, the Cys-triggered dual-channel fluorescence imaging in LDs and mitochondria during apoptosis induced by UV light exposure, H2O2, or LPS treatment is clearly observed for the first time. Besides, we also report here that TSQC can be used to image subcellular Cys in different cell lines by measuring the fluorescence intensities of different emission channels. In particular, TSQC shows superior utility for the in vivo imaging of apoptosis in acute and chronic epilepsy mice. In brief, the newly designed NIR AIEgen TSQC can respond to Cys and separate two fluorescence signals to mitochondria and LDs, respectively, to study Cys-related apoptosis.
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Affiliation(s)
- Songjiao Li
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Department of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, Hengyang 421002, China
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Peipei Wang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Department of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, Hengyang 421002, China
| | - Miantai Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Ke Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Department of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, Hengyang 421002, China
| | - Dan Cheng
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Department of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, Hengyang 421002, China
| | - Zhiqiang Mao
- College of Health Science and Engineering, Hubei University, Wuhan 430062, China
| | - Longwei He
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Department of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, Hengyang 421002, China
| | - Zhihong Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
- College of Health Science and Engineering, Hubei University, Wuhan 430062, China
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21
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Katzbaer RR, Dos Santos Vieira FM, Dabo I, Mao Z, Schaak RE. Band Gap Narrowing in a High-Entropy Spinel Oxide Semiconductor for Enhanced Oxygen Evolution Catalysis. J Am Chem Soc 2023; 145:6753-6761. [PMID: 36920866 DOI: 10.1021/jacs.2c12887] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
High-entropy oxides (HEOs), which contain five or more metal cations that are generally thought to be randomly mixed in a crystalline oxide lattice, can exhibit unique and enhanced properties, including improved catalytic performance, due to synergistic effects. Here, we show that band gap narrowing emerges in a high-entropy aluminate spinel oxide, (Fe0.2Co0.2Ni0.2Cu0.2Zn0.2)Al2O4 (A5Al2O4). The 0.9 eV band gap of A5Al2O4 is narrower than the band gaps of all parent spinel oxides. First-principles calculations for multicomponent AAl2O4 spinels indicate that the band gap narrowing arises from the broadening of the energy distribution of the 3d states due to variations in the electronegativities and crystal field splitting across the 3d transition-metal series. As a catalyst for the oxygen evolution reaction in an alkaline electrolyte, A5Al2O4 reaches a current density of 10 mA/cm2 at an overpotential of 400 mV, outperforming all of the single-metal end members at an applied potential of 1.7 V vs RHE. Catalyst deactivation occurs after 5 h at 10 mA/cm2 and is attributed, based on elemental analysis and grazing-incidence X-ray diffraction, to the formation of a passivating layer that blocks the high-entropy oxide surface. This result helps to validate that the HEO is the active catalyst. The observation of band gap narrowing in A5Al2O4 expands the scope of synergistic properties exhibited by high-entropy materials and offers insight into the question of how the electronic structure of multicomponent oxide materials can be engineered via a high-entropy approach to achieve enhanced catalytic properties.
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Affiliation(s)
- Rowan R Katzbaer
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | | | - Ismaila Dabo
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Zhiqiang Mao
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.,Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Raymond E Schaak
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.,Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.,Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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22
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Lv R, Wang X, Mao Z, Bai Y, Hao J, Zhang F. Engineering Sandwiched Nanochannel Aptasensor for Efficiently Screening Cancer Cells. Chemistry 2023; 29:e202203380. [PMID: 36478319 DOI: 10.1002/chem.202203380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/03/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
Cancer cells are a class of important tumor biomarkers and are closely related to tumorous progression. It is urgent to develop a sensitive and highly efficient method for the rapid and accurate detection of cancer cells. Herein, an aptamer sandwiched nanochannel electrochemical sensor was established for the highly selective determination of cancer cells. By virtue of the porous nanochannels as the filter platform and immobilized with DNA aptamers for specifically capturing the cancer cells, the nanochannel-based electrochemical sensor denotes excellent performance for MCF-7 screening, and allowing a low limit of detection of 36 cells mL-1 . The nanochannels-based sandwich structure aptasensor not only presents an efficacious and reliable approach for cancer cell detection but also provides great advantage for preventing electrode passivation in the process of biomarkers analysis.
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Affiliation(s)
- Rui Lv
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and, Application of Organic Functional Molecules, College of Health Sciences and Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Xing Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and, Application of Organic Functional Molecules, College of Health Sciences and Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Zhiqiang Mao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and, Application of Organic Functional Molecules, College of Health Sciences and Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Yurong Bai
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and, Application of Organic Functional Molecules, College of Health Sciences and Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Junxing Hao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and, Application of Organic Functional Molecules, College of Health Sciences and Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Fan Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and, Application of Organic Functional Molecules, College of Health Sciences and Engineering, Hubei University, Wuhan, 430062, P. R. China
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23
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Ye M, Xiang Y, Gong J, Wang X, Mao Z, Liu Z. Monitoring Hg 2+ and MeHg + poisoning in living body with an activatable near-infrared II fluorescence probe. J Hazard Mater 2023; 445:130612. [PMID: 37056002 DOI: 10.1016/j.jhazmat.2022.130612] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 12/01/2022] [Accepted: 12/13/2022] [Indexed: 06/19/2023]
Abstract
Noninvasively imaging mercury poisoning in living organisms is critical to understanding its toxicity and treatments. Especially, simultaneous fluorescence imaging of Hg2+ and MeHg+in vivo is helpful to disclose the mysteries of mercury poisoning. The key limitation for mercury imaging in vivo is the low imaging signal-to-background ratio (SBR) and limited imaging depth, which may result in unreliable detection results. Here, we designed and prepared a near-infrared II (NIR II) emissive probe, NIR-Rh-MS, leveraging the "spirolactam ring-open" tactic of xanthene dyes for in situ visualization of mercury toxicity in mice. The probe produces a marked fluorescence signal at 1015 nm and displays good linear responses to Hg2+ and MeHg+ with excellent sensitivity, respectively. The penetration experiments elucidate that the activated NIR-II fluorescence signal of the probe penetrates to a depth of up to 7 mm in simulated tissues. Impressively, the probe can monitor the toxicity of Hg2+ in mouse livers and the accumulation of MeHg+ in mouse brains via intravital NIR-II imaging for the first time. Thus, we believe that detecting Hg2+ and MeHg+ in different organs with a single NIR-II fluorescence probe in mice would assuredly advance the toxicologic study of mercury poisoning in vivo.
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Affiliation(s)
- Miantai Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yunhui Xiang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Jiankang Gong
- College of Health Science and Engineering, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Xiaoyu Wang
- College of Health Science and Engineering, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Zhiqiang Mao
- College of Health Science and Engineering, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Zhihong Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; College of Health Science and Engineering, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
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24
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Zhang S, Chen J, Yao S, Akter F, Wang Z, Hu B, Zhu D, Duan C, Chen W, Zhu Y, Wang H, Mao Z. Predictors of postoperative biochemical remission in lower Knosp grade growth hormone-secreting pituitary adenomas: a large single center study. J Endocrinol Invest 2023; 46:465-476. [PMID: 36125731 DOI: 10.1007/s40618-022-01873-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/16/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE Growth hormone-secreting pituitary adenomas (GH-PAs) with a low Knosp grade are typically associated with a good postoperative biochemical remission (BR) rate. However, a proportion of patients do not achieve remission. In this study, we aimed to investigate predictive factors of postoperative remission for lower Knosp GH-PAs. METHODS In this retrospective study, we enrolled 140 patients who were diagnosed with lower Knosp (0-2) GH-PAs and received trans-sphenoidal surgery between December 2016 and June 2021 from the largest pituitary tumor surgery center in southern China. The univariate, binary Logistic regression, and receiver operating characteristic curve (ROC) analyses were employed to determine independent predictors and cutoff values of remission. The postoperative outcome was defined as remission using the 2010 consensus criteria of acromegaly. RESULTS One hundred and thirty six patients (97.1%) achieved gross total resection. The postoperative long-term BR was 68.6%. Empty sella, tumor maximum diameter and postoperative GH levels were independent factors predicting remission. ROC revealed that postoperative 24 h GH ≤ 1.3 ng/mL and ≤ 1.23 ng/mL were valuable predictors for 3-month and long-term remission respectively, and that postoperative 3-month GH ≤ 1.6 ng/mL and tumor maximum diameter ≤ 17 mm were predictors for delayed remission. CONCLUSION Early postoperative GH levels can be used as predictors of remission. However, BR was not associated with preoperative somatostatin analogs therapy or Knosp grade (0-2). For patients without residual tumor or recurrence and whose GH levels are slightly elevated within 1 year after surgery, adjuvant treatments may not be necessary.
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Affiliation(s)
- S Zhang
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - J Chen
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - S Yao
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - F Akter
- Faculty of Arts and Sciences, Harvard University, Cambridge, MA, USA
| | - Z Wang
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - B Hu
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - D Zhu
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - C Duan
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - W Chen
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Zhu
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China.
| | - H Wang
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
| | - Z Mao
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
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25
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Guan Y, Miao L, He J, Ning J, Chen Y, Xie W, Sun J, Gopalan V, Zhu J, Wang X, Alem N, Zhang Q, Mao Z. Layered Semiconductor Cr 0.32Ga 0.68Te 2.33 with Concurrent Broken Inversion Symmetry and Ferromagnetism: A Bulk Ferrovalley Material Candidate. J Am Chem Soc 2023; 145:4683-4690. [PMID: 36795912 DOI: 10.1021/jacs.2c12848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The valleytronic state found in group-VI transition-metal dichalcogenides such as MoS2 has attracted immense interest since its valley degree of freedom could be used as an information carrier. However, valleytronic applications require spontaneous valley polarization. Such an electronic state is predicted to be accessible in a new ferroic family of materials, i.e., ferrovalley materials, which features the coexistence of spontaneous spin and valley polarization. Although many atomic monolayer materials with hexagonal lattices have been predicted to be ferrovalley materials, no bulk ferrovalley material candidates have been reported or proposed. Here, we show that a new non-centrosymmetric van der Waals (vdW) semiconductor Cr0.32Ga0.68Te2.33, with intrinsic ferromagnetism, is a possible candidate for bulk ferrovalley material. This material exhibits several remarkable characteristics: (i) it forms a natural heterostructure between vdW gaps, a quasi-two-dimensional (2D) semiconducting Te layer with a honeycomb lattice stacked on the 2D ferromagnetic slab comprised of the (Cr, Ga)-Te layers, and (ii) the 2D Te honeycomb lattice yields a valley-like electronic structure near the Fermi level, which, in combination with inversion symmetry breaking, ferromagnetism, and strong spin-orbit coupling contributed by heavy Te element, creates a possible bulk spin-valley locked electronic state with valley polarization as suggested by our DFT calculations. Further, this material can also be easily exfoliated to 2D atomically thin layers. Therefore, this material offers a unique platform to explore the physics of valleytronic states with spontaneous spin and valley polarization in both bulk and 2D atomic crystals.
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Affiliation(s)
- Yingdong Guan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Leixin Miao
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jingyang He
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jinliang Ning
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United States
| | - Yangyang Chen
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- 2-Dimensional Crystal Consortium, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Weiwei Xie
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Jianwei Sun
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United States
| | - Venkatraman Gopalan
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jun Zhu
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- 2-Dimensional Crystal Consortium, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Xiaoping Wang
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Nasim Alem
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Qiang Zhang
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Zhiqiang Mao
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
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26
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Zhang Y, Li Z, Singh S, Nozariasbmarz A, Li W, Genç A, Xia Y, Zheng L, Lee SH, Karan SK, Goyal GK, Liu N, Mohan SM, Mao Z, Cabot A, Wolverton C, Poudel B, Priya S. Defect-Engineering-Stabilized AgSbTe 2 with High Thermoelectric Performance. Adv Mater 2023; 35:e2208994. [PMID: 36566084 DOI: 10.1002/adma.202208994] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Thermoelectric (TE) generators enable the direct and reversible conversion between heat and electricity, providing applications in both refrigeration and power generation. In the last decade, several TE materials with relatively high figures of merit (zT) have been reported in the low- and high-temperature regimes. However, there is an urgent demand for high-performance TE materials working in the mid-temperature range (400-700 K). Herein, p-type AgSbTe2 materials stabilized with S and Se co-doping are demonstrated to exhibit an outstanding maximum figure of merit (zTmax ) of 2.3 at 673 K and an average figure of merit (zTave ) of 1.59 over the wide temperature range of 300-673 K. This exceptional performance arises from an enhanced carrier density resulting from a higher concentration of silver vacancies, a vastly improved Seebeck coefficient enabled by the flattening of the valence band maximum and the inhibited formation of n-type Ag2 Te, and ahighly improved stability beyond 673 K. The optimized material is used to fabricate a single-leg device with efficiencies up to 13.3% and a unicouple TE device reaching energy conversion efficiencies up to 12.3% at a temperature difference of 370 K. These results highlight an effective strategy to engineer high-performance TE material in the mid-temperature range.
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Affiliation(s)
- Yu Zhang
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Zhi Li
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Saurabh Singh
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Amin Nozariasbmarz
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Wenjie Li
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Aziz Genç
- Department of Materials Science and Engineering, Faculty of Engineering, İzmir Institute of Technology, İzmir, 35430, Turkey
| | - Yi Xia
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Luyao Zheng
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Seng Huat Lee
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Sumanta Kumar Karan
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Gagan K Goyal
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Na Liu
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Sanghadasa Mf Mohan
- U.S. Army Combat Capabilities Development Command Aviation & Missile Center, Redstone Arsenal, AL, 35898, USA
| | - Zhiqiang Mao
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Andreu Cabot
- Catalonia Institute for Energy Research - IREC, Sant Adrià de Besòs, Barcelona, Catalonia, 08930, Spain
- ICREA, Pg. Lluis Companys, Barcelona, Catalonia, 08010, Spain
| | - Christopher Wolverton
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Bed Poudel
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Shashank Priya
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
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27
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Xu J, Mao Z, Jia YF, Qi HC, Qiu TY, Mao F, Hu M. [A heterozygous mutation of WNT10A gene caused congenital hypodontia and anterior crossbite]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:185-188. [PMID: 36746453 DOI: 10.3760/cma.j.cn112144-20221018-00537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- J Xu
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Z Mao
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Y F Jia
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - H C Qi
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - T Y Qiu
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - F Mao
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - M Hu
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China
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28
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Li X, Liu D, Liu C, Mao Z, Liu Y, Yi H, Zhou F. Conservative versus liberal oxygen therapy in relation to all-cause mortality among patients in the intensive care unit: a systematic review of randomized controlled trials with meta-analysis and trial sequential analysis. Med Intensiva 2023; 47:73-83. [PMID: 35644886 DOI: 10.1016/j.medine.2021.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/22/2021] [Indexed: 02/01/2023]
Abstract
OBJECTIVE To evaluate the benefits and harmful effects of conservative versus liberal oxygen therapy in patients admitted to the Intensive Care Unit (ICU). DESIGN A systematic review and meta-analysis was carried out. SETTING ICU. PARTICIPANTS Adult patients (aged 18 years or older) were randomized to either a lower oxygenation target strategy (conservative oxygen therapy) or a higher oxygenation target strategy (liberal oxygen therapy) in the ICU. INTERVENTIONS Patients received different oxygenation target strategies. RESULTS Ten studies involving 5429 adult patients admitted to the ICU were included in the meta-analysis. The pooled results showed no decreased all-cause mortality at 28 days (RR 0.90; 95%CI 0.75-1.09; p = 0.28), 90 days (RR 1.02; 95%CI 0.92-1.13; p = 0.71) or longest follow-up (RR 0.97; 95%CI 0.88-1.08; p = 0.63) among patients administered conservative oxygen therapy. Secondary outcomes were comparable between the two groups. The results of sensitivity analyses and subgroup analyses were consistent with the main analyses. CONCLUSION No beneficial or harmful effects of conservative oxygen therapy were found compared to liberal oxygen therapy in relation to all-cause mortality among adult patients in the ICU. Conservative oxygen therapy did not reduce all-cause mortality at 28 days, 90 days or longest follow-up. Other important clinical outcomes were also comparable between the two groups.
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Affiliation(s)
- X Li
- Department of Critical Care Medicine, The First Medical Centre, Chinese PLA General Hospital, PR China; Medical School of Chinese PLA, PR China.
| | - D Liu
- Department of Emergency Medicine, The Fourth Medical Centre, Chinese PLA General Hospital, PR China.
| | - C Liu
- Medical School of Chinese PLA, PR China.
| | - Z Mao
- Department of Critical Care Medicine, The First Medical Centre, Chinese PLA General Hospital, PR China.
| | - Y Liu
- Department of Emergency Medicine, Peking Union Medical College Hospital, PR China
| | - H Yi
- Department of Critical Care Medicine, The First Medical Centre, Chinese PLA General Hospital, PR China; Medical School of Chinese PLA, PR China
| | - F Zhou
- Department of Critical Care Medicine, The First Medical Centre, Chinese PLA General Hospital, PR China.
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Mao Z, Kim JH, Lee J, Xiong H, Zhang F, Kim JS. Engineering of BODIPY-based theranostics for cancer therapy. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Min L, Tan H, Xie Z, Miao L, Zhang R, Lee SH, Gopalan V, Liu CX, Alem N, Yan B, Mao Z. Strong room-temperature bulk nonlinear Hall effect in a spin-valley locked Dirac material. Nat Commun 2023; 14:364. [PMID: 36690617 PMCID: PMC9871029 DOI: 10.1038/s41467-023-35989-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 01/10/2023] [Indexed: 01/24/2023] Open
Abstract
Nonlinear Hall effect (NLHE) is a new type of Hall effect with wide application prospects. Practical device applications require strong NLHE at room temperature (RT). However, previously reported NLHEs are all low-temperature phenomena except for the surface NLHE of TaIrTe4. Bulk RT NLHE is highly desired due to its ability to generate large photocurrent. Here, we show the spin-valley locked Dirac state in BaMnSb2 can generate a strong bulk NLHE at RT. In the microscale devices, we observe the typical signature of an intrinsic NLHE, i.e. the transverse Hall voltage quadratically scales with the longitudinal current as the current is applied to the Berry curvature dipole direction. Furthermore, we also demonstrate our nonlinear Hall device's functionality in wireless microwave detection and frequency doubling. These findings broaden the coupled spin and valley physics from 2D systems into a 3D system and lay a foundation for exploring bulk NLHE's applications.
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Affiliation(s)
- Lujin Min
- grid.29857.310000 0001 2097 4281Department of Physics, Pennsylvania State University, University Park, PA USA ,grid.29857.310000 0001 2097 4281Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA USA
| | - Hengxin Tan
- grid.13992.300000 0004 0604 7563Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel
| | - Zhijian Xie
- grid.266860.c0000 0001 0671 255XDepartment of Electrical and Computer Engineering, North Carolina Agriculture &Technical State University, Greensboro, NC USA
| | - Leixin Miao
- grid.29857.310000 0001 2097 4281Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA USA
| | - Ruoxi Zhang
- grid.29857.310000 0001 2097 4281Department of Physics, Pennsylvania State University, University Park, PA USA
| | - Seng Huat Lee
- grid.29857.310000 0001 2097 4281Department of Physics, Pennsylvania State University, University Park, PA USA ,grid.29857.310000 0001 2097 42812D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA USA
| | - Venkatraman Gopalan
- grid.29857.310000 0001 2097 4281Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA USA
| | - Chao-Xing Liu
- grid.29857.310000 0001 2097 4281Department of Physics, Pennsylvania State University, University Park, PA USA
| | - Nasim Alem
- grid.29857.310000 0001 2097 4281Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA USA
| | - Binghai Yan
- grid.13992.300000 0004 0604 7563Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel
| | - Zhiqiang Mao
- grid.29857.310000 0001 2097 4281Department of Physics, Pennsylvania State University, University Park, PA USA ,grid.29857.310000 0001 2097 4281Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA USA ,grid.29857.310000 0001 2097 42812D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA USA
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31
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Yan C, Zhu Y, Miao L, Fernandez-Mulligan S, Green E, Mei R, Tan H, Yan B, Liu CX, Alem N, Mao Z, Yang S. Delicate Ferromagnetism in MnBi 6Te 10. Nano Lett 2022; 22:9815-9822. [PMID: 36315185 PMCID: PMC9801432 DOI: 10.1021/acs.nanolett.2c02500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Tailoring magnetic orders in topological insulators is critical to the realization of topological quantum phenomena. An outstanding challenge is to find a material where atomic defects lead to tunable magnetic orders while maintaining a nontrivial topology. Here, by combining magnetization measurements, angle-resolved photoemission spectroscopy, and transmission electron microscopy, we reveal disorder-enabled, tunable magnetic ground states in MnBi6Te10. In the ferromagnetic phase, an energy gap of 15 meV is resolved at the Dirac point on the MnBi2Te4 termination. In contrast, antiferromagnetic MnBi6Te10 exhibits gapless topological surface states on all terminations. Transmission electron microscopy and magnetization measurements reveal substantial Mn vacancies and Mn migration in ferromagnetic MnBi6Te10. We provide a conceptual framework where a cooperative interplay of these defects drives a delicate change of overall magnetic ground state energies and leads to tunable magnetic topological orders. Our work provides a clear pathway for nanoscale defect-engineering toward the realization of topological quantum phases.
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Affiliation(s)
- Chenhui Yan
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois60637, United States
| | - Yanglin Zhu
- Department
of Physics, Pennsylvania State University, University Park, State College, Pennsylvania16802, United States
| | - Leixin Miao
- Department
of Materials Science and Engineering, The
Pennsylvania State University, University Park, State College, Pennsylvania16802, United States
| | | | - Emanuel Green
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois60637, United States
| | - Ruobing Mei
- Department
of Physics, Pennsylvania State University, University Park, State College, Pennsylvania16802, United States
| | - Hengxin Tan
- Department
of Condensed Matter Physics, Weizmann Institute
of Science, Rehovot7610001, Israel
| | - Binghai Yan
- Department
of Condensed Matter Physics, Weizmann Institute
of Science, Rehovot7610001, Israel
| | - Chao-Xing Liu
- Department
of Physics, Pennsylvania State University, University Park, State College, Pennsylvania16802, United States
| | - Nasim Alem
- Department
of Materials Science and Engineering, The
Pennsylvania State University, University Park, State College, Pennsylvania16802, United States
| | - Zhiqiang Mao
- Department
of Physics, Pennsylvania State University, University Park, State College, Pennsylvania16802, United States
| | - Shuolong Yang
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois60637, United States
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32
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Padmanabhan H, Stoica VA, Kim PK, Poore M, Yang T, Shen X, Reid AH, Lin MF, Park S, Yang J, Wang HH, Koocher NZ, Puggioni D, Georgescu AB, Min L, Lee SH, Mao Z, Rondinelli JM, Lindenberg AM, Chen LQ, Wang X, Averitt RD, Freeland JW, Gopalan V. Large Exchange Coupling Between Localized Spins and Topological Bands in MnBi 2 Te 4. Adv Mater 2022; 34:e2202841. [PMID: 36189841 DOI: 10.1002/adma.202202841] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 09/21/2022] [Indexed: 06/16/2023]
Abstract
Magnetism in topological materials creates phases exhibiting quantized transport phenomena with potential technological applications. The emergence of such phases relies on strong interaction between localized spins and the topological bands, and the consequent formation of an exchange gap. However, this remains experimentally unquantified in intrinsic magnetic topological materials. Here, this interaction is quantified in MnBi2 Te4 , a topological insulator with intrinsic antiferromagnetism. This is achieved by optically exciting Bi-Te p states comprising the bulk topological bands and interrogating the consequent Mn 3d spin dynamics, using a multimodal ultrafast approach. Ultrafast electron scattering and magneto-optic measurements show that the p states demagnetize via electron-phonon scattering at picosecond timescales. Despite being energetically decoupled from the optical excitation, the Mn 3d spins, probed by resonant X-ray scattering, are observed to disorder concurrently with the p spins. Together with atomistic simulations, this reveals that the exchange coupling between localized spins and the topological bands is at least 100 times larger than the superexchange interaction, implying an optimal exchange gap of at least 25 meV in the surface states. By quantifying this exchange coupling, this study validates the materials-by-design strategy of utilizing localized magnetic order to manipulate topological phases, spanning static to ultrafast timescales.
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Affiliation(s)
- Hari Padmanabhan
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Vladimir A Stoica
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Peter K Kim
- Department of Physics, University of California San Diego, La Jolla, CA, 92093, USA
| | - Maxwell Poore
- Department of Physics, University of California San Diego, La Jolla, CA, 92093, USA
| | - Tiannan Yang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Xiaozhe Shen
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Alexander H Reid
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Ming-Fu Lin
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Suji Park
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Jie Yang
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Huaiyu Hugo Wang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Nathan Z Koocher
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Danilo Puggioni
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Alexandru B Georgescu
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Lujin Min
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Seng Huat Lee
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, Penn State University, University Park, PA, 16802, USA
| | - Zhiqiang Mao
- 2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Physics, Penn State University, University Park, PA, 16802, USA
| | - James M Rondinelli
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Aaron M Lindenberg
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
- Department of Materials Science and Engineering, Stanford University, Menlo Park, CA, 94305, USA
| | - Long-Qing Chen
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Xijie Wang
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Richard D Averitt
- Department of Physics, University of California San Diego, La Jolla, CA, 92093, USA
| | - John W Freeland
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Venkatraman Gopalan
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
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33
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Zhang Y, Mao Z, Xue F, Liu R. 119P Clinicopathological features and roles of lymph node metastases in gastric cancer: A single-center retrospective study in China. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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34
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Chen L, Zeng H, Liang X, Yi J, Mao Z, Li G, Liu L, Hu Y. A selective water control and gas augmentation method based on APR gel. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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35
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Shao Y, Sternbach AJ, Kim BSY, Rikhter AA, Xu X, De Giovannini U, Jing R, Chae SH, Sun Z, Lee SH, Zhu Y, Mao Z, Hone JC, Queiroz R, Millis AJ, Schuck PJ, Rubio A, Fogler MM, Basov DN. Infrared plasmons propagate through a hyperbolic nodal metal. Sci Adv 2022; 8:eadd6169. [PMID: 36288317 PMCID: PMC9604610 DOI: 10.1126/sciadv.add6169] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Metals are canonical plasmonic media at infrared and optical wavelengths, allowing one to guide and manipulate light at the nanoscale. A special form of optical waveguiding is afforded by highly anisotropic crystals revealing the opposite signs of the dielectric functions along orthogonal directions. These media are classified as hyperbolic and include crystalline insulators, semiconductors, and artificial metamaterials. Layered anisotropic metals are also anticipated to support hyperbolic waveguiding. However, this behavior remains elusive, primarily because interband losses arrest the propagation of infrared modes. Here, we report on the observation of propagating hyperbolic waves in a prototypical layered nodal-line semimetal ZrSiSe. The observed waveguiding originates from polaritonic hybridization between near-infrared light and nodal-line plasmons. Unique nodal electronic structures simultaneously suppress interband loss and boost the plasmonic response, ultimately enabling the propagation of infrared modes through the bulk of the crystal.
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Affiliation(s)
- Yinming Shao
- Department of Physics, Columbia University, New York, NY 10027, USA
| | | | - Brian S. Y. Kim
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA
| | - Andrey A. Rikhter
- Department of Physics, University of California, San Diego, La Jolla, CA 92093, USA
| | - Xinyi Xu
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA
| | - Umberto De Giovannini
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, Hamburg 22761, Germany
- Università degli Studi di Palermo, Dipartimento di Fisica e Chimica Emilio Segrè, via Archirafi 36, I-90123 Palermo, Italy
| | - Ran Jing
- Department of Physics, Columbia University, New York, NY 10027, USA
| | - Sang Hoon Chae
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA
| | - Zhiyuan Sun
- Department of Physics, Columbia University, New York, NY 10027, USA
| | - Seng Huat Lee
- Department of Physics, Pennsylvania State University, University Park, PA 16802, USA
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
| | - Yanglin Zhu
- Department of Physics, Pennsylvania State University, University Park, PA 16802, USA
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
| | - Zhiqiang Mao
- Department of Physics, Pennsylvania State University, University Park, PA 16802, USA
- 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
| | - James C. Hone
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA
| | - Raquel Queiroz
- Department of Physics, Columbia University, New York, NY 10027, USA
| | - Andrew J. Millis
- Department of Physics, Columbia University, New York, NY 10027, USA
- Center for Computational Quantum Physics (CCQ), Flatiron Institute, New York, NY 10010, USA
| | - P. James Schuck
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA
| | - Angel Rubio
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, Hamburg 22761, Germany
- Center for Computational Quantum Physics (CCQ), Flatiron Institute, New York, NY 10010, USA
| | - Michael M. Fogler
- Department of Physics, University of California, San Diego, La Jolla, CA 92093, USA
| | - Dmitri N. Basov
- Department of Physics, Columbia University, New York, NY 10027, USA
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36
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Wang P, Yu L, Gong J, Xiong J, Zi S, Xie H, Zhang F, Mao Z, Liu Z, Kim JS. An Activity‐Based Fluorescent Probe for Imaging Fluctuations of Peroxynitrite (ONOO
−
) in the Alzheimer's Disease Brain. Angew Chem Int Ed Engl 2022; 61:e202206894. [DOI: 10.1002/anie.202206894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Indexed: 12/25/2022]
Affiliation(s)
- Pengzhan Wang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
| | - Le Yu
- Department of Chemistry Korea University Seoul 02841 Korea
| | - Jiankang Gong
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
| | - Jianhua Xiong
- College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei 430072 China
| | - Soyu Zi
- Department of Chemistry Korea University Seoul 02841 Korea
| | - Hua Xie
- School of Water Resources and Hydropower Wuhan University Wuhan Hubei 430072 China
| | - Fan Zhang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
| | - Zhiqiang Mao
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
- Department of Chemistry Korea University Seoul 02841 Korea
| | - Zhihong Liu
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
- College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei 430072 China
| | - Jong Seung Kim
- Department of Chemistry Korea University Seoul 02841 Korea
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Zhang Y, Guo H, Jia X, Liu M, Li Y, Mao Z. 1146P Correlation between different molecular states and liver metastasis in patients with non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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38
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Wang Z, Gong J, Wang P, Xiong J, Zhang F, Mao Z. An activatable fluorescent probe enables in vivo evaluation of peroxynitrite levels in rheumatoid arthritis. Talanta 2022; 252:123811. [DOI: 10.1016/j.talanta.2022.123811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/31/2022] [Accepted: 08/01/2022] [Indexed: 10/15/2022]
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39
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Wang P, Yu L, Gong J, Xiong J, Zi S, Xie H, Zhang F, Mao Z, Liu Z, Kim JS. An Activity‐Based Fluorescent Probe for Imaging Fluctuations of Peroxynitrite (ONOO‐) in the Alzheimer's Disease Brain. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pengzhan Wang
- Ministry of education key laboratory for the synthesis and application of organic functional molecules, Hubei University, Wuhan College of chemistry and chemical engineering 430062 CHINA
| | - Le Yu
- Korea university, Seoul Chemistry KOREA, REPUBLIC OF
| | - Jiankang Gong
- Ministry of education key laboratory for the synthesis and application of organic functional molecules College of chemistry and chemical engineering 430062 CHINA
| | - Jianhua Xiong
- Wuhan university, Wuhan College of chemistry and molecular science CHINA
| | - Soyu Zi
- Korea university, Seoul Chemistry KOREA, REPUBLIC OF
| | - Hua Xie
- Wuhan University, Wuhan School of water resources and hydropower CHINA
| | - Fan Zhang
- Ministry of educational key laboratory for the synthesis and application of organic functional molecules, Hubei University, Wuhan College of chemistry and chemical engineering CHINA
| | - Zhiqiang Mao
- Ministry of education key laboratory for the synthesis and application of organic functional molecules, Huibei University, Wuhan College of chemistry and chemical engineering CHINA
| | - Zhihong Liu
- Ministry of education key laboratory for the synthesis and application of organic functional molecules, Huibei University, Wuhan College of chemistry and chemical engineering CHINA
| | - Jong Seung Kim
- Korea University Department of Chemistry Anamdong 02841 Seoul KOREA, REPUBLIC OF
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40
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He J, Chen S, Wu X, Jiang D, Li R, Mao Z. Hsa_circ_0081534 facilitates malignant phenotypes by sequestering miR-874-3p and upregulating FMNL3 in nasopharyngeal carcinoma. Auris Nasus Larynx 2022; 49:822-833. [DOI: 10.1016/j.anl.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 02/06/2022] [Accepted: 02/13/2022] [Indexed: 11/24/2022]
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41
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Wang P, Cheng X, Xiong J, Mao Z, Liu Z. Revealing Formaldehyde Fluxes in Alzheimer's Disease Brain by an Activity‐based Fluorescence Probe. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pengzhan Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
| | - Xianhua Cheng
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
| | - Jianhua Xiong
- College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei 430072 China
| | - Zhiqiang Mao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
| | - Zhihong Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China
- College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei 430072 China
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42
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Mao Z, Xiong J, Wang P, An J, Zhang F, Liu Z, Seung Kim J. Activity-based fluorescence probes for pathophysiological peroxynitrite fluxes. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214356] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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43
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Katz RJ, Zhu Y, Mao Z, Schaak RE. Persistence and Evolution of Materials Features During Catalysis Using Topological and Trivial Polymorphs of MoTe
2. ChemCatChem 2021. [DOI: 10.1002/cctc.202101714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rebecca J. Katz
- Department of Chemistry The Pennsylvania State University University Park PA 16802 USA
| | - Yanglin Zhu
- Department of Physics The Pennsylvania State University University Park PA 16802 USA
| | - Zhiqiang Mao
- Department of Chemistry The Pennsylvania State University University Park PA 16802 USA
- Department of Physics The Pennsylvania State University University Park PA 16802 USA
| | - Raymond E. Schaak
- Department of Chemistry The Pennsylvania State University University Park PA 16802 USA
- Department of Chemical Engineering and Materials Research Institute The Pennsylvania State University University Park PA 16802 USA
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44
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Fan K, Wei D, Liu X, He Y, Tian H, Tu R, Liu P, Nie L, Zhang L, Qiao D, Liu X, Hou J, Li L, Wang C, Huo W, Zhang G, Mao Z. Negative associations of morning serum cortisol levels with obesity: the Henan rural cohort study. J Endocrinol Invest 2021; 44:2581-2592. [PMID: 33829394 DOI: 10.1007/s40618-021-01558-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 03/22/2021] [Indexed: 12/19/2022]
Abstract
AIMS To evaluate the associations of morning serum cortisol levels with obesity defined by different indices in Chinese rural populations. MATERIALS AND METHODS A cross-sectional study was performed including 6198 participants (2566 males and 3632 females). Serum cortisol was collected in morning and quantified by liquid chromatography-tandem mass spectrometry. Obesity was defined by body mass index (BMI), body fat percentage (BFP), waist-to-height ratio (WHtR), waist circumference (WC), visceral fat index (VFI) and waist-to-hip ratio (WHR). Both multivariable liner regression, logistic regression and restrictive cubic splines models were used to estimate the gender-specific relationships between cortisol levels and obesity defined by different indices, respectively. RESULTS After adjusting for potential confounders, serum cortisol was negatively associated with different obesity measures, except obese females defined by BFP (for instance, overall obesity defined by BMI, Quartile 4 vs. Quartile 1, odds ratio (OR) = 0.25, 95% confidence interval (CI):0.15, 0.41 in males, and OR = 0.58, 95% CI: 0.42,0.80 in females, central obesity defined by WC, OR = 0.52, 95% CI:0.39,0.69 in males and OR = 0.63, 95% CI:0.51,0.77 in females). Similarly, restrictive cubic splines showed the nonlinear relationship between high levels of cortisol and different obesity indices. Furthermore, ROC curve analysis indicated that cortisol could improve the discrimination of model with common biomarkers. CONCLUSION Morning serum cortisol were negatively related to obesity defined by different indices in Chinese rural populations. In addition, cortisol could be as a biomarker for prediction of obesity in males.
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Affiliation(s)
- K Fan
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - D Wei
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - X Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - Y He
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - H Tian
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - R Tu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - P Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - L Nie
- Department of Occupational and Environmental Health Sciences, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - L Zhang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - D Qiao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - X Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - J Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - L Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - C Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - W Huo
- Department of Occupational and Environmental Health Sciences, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China
| | - G Zhang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China.
| | - Z Mao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, People's Republic of China.
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Bian Z, Sun L, Tian K, Liu B, Zhang X, Mao Z, Huang B, Wu L. Estimation of Heavy Metals in Tailings and Soils Using Hyperspectral Technology: A Case Study in a Tin-Polymetallic Mining Area. Bull Environ Contam Toxicol 2021; 107:1022-1031. [PMID: 34241644 DOI: 10.1007/s00128-021-03311-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
Rapid assessment of heavy metal (HM) pollution in mining areas is urgently required for further remediation. Here, hyperspectral technology was used to predict HM contents of multi-media environments (tailings, surrounding soils and agricultural soils) in a mining area. The correlation between hyperspectral data and HMs was explored, then the prediction models were established by partial least squares regression (PLSR) and back propagation neural networks (BPNN). The determination coefficients (R2), root mean squared error and ratios of performance to interquartile range (RPIQ) were used to evaluate the performance of the models. Results show that: (1) both PLSR and BPNN had good prediction ability, and (2) BPNN had better generalization ability (Cu (R2 = 0.89, RPIQ = 3.05), Sn (R2 = 0.86, RPIQ = 4.91), Zn (R2 = 0.74, RPIQ = 1.44) and Pb (R2 = 0.70, RPIQ = 2.10)). In summary, this study indicates that hyperspectral technology has potential application in HM estimation and soil pollution investigation in polymetallic mining areas.
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Affiliation(s)
- Zijin Bian
- Key Laboratory of Regional Environment and Eco-Remediation (Shenyang University), Ministry of Education, Shenyang, 110044, China
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Lina Sun
- Key Laboratory of Regional Environment and Eco-Remediation (Shenyang University), Ministry of Education, Shenyang, 110044, China
| | - Kang Tian
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Benle Liu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Xiaohui Zhang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of the Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Zhiqiang Mao
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of the Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Biao Huang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Longhua Wu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
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Liu B, Tian K, Huang B, Zhang X, Bian Z, Mao Z, Yuan X, Fu J, Wu L. Pollution Characteristics and Risk Assessment of Potential Toxic Elements in a Tin-polymetallic Mine Area Southwest China: Environmental Implications by Multi-Medium Analysis. Bull Environ Contam Toxicol 2021; 107:1032-1042. [PMID: 34230989 DOI: 10.1007/s00128-021-03314-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
A multi-medium system, involving tailing area (tailings, surrounding soils and water) and downstream agricultural area (river water, sediments and farmland soils), was conceived to evaluate the pollution status of potential toxic elements (PTEs, including Fe, Mn, Ni, Cu, Zn, As, Sn, Pb, Cr and Cd) and environmental risks in a tin-polymetallic mine area southwest China. The results indicated that tailings exhibited representative enrichment and combination characteristics of Sn, Cu, Ni, Fe, As, Pb and Cr compared to surrounding soils. Acid mine drainage (AMD) from tailings and other mining-related sources greatly affected river water and farmland soils, resulting in soil acidification and accumulation of Sn, As, Cu and Pb in paddy soils. Overall, potential ecological risks posed by tailings and river sediments, and pollution risks from Cu, As and Pb in farmland should be concerned. Therefore, effective measures should be urgently taken to prevent PTEs and AMD into surrounding environmental media.
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Affiliation(s)
- Benle Liu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Kang Tian
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, China.
| | - Biao Huang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, China
| | - Xiaohui Zhang
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, 210098, Nanjing, China
| | - Zijin Bian
- Key Laboratory of Regional Environment and Eco-Remediation, Ministry of Education, Shenyang University, 110044, Shenyang, China
| | - Zhiqiang Mao
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, 210098, Nanjing, China
| | - Xuyin Yuan
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, 210098, Nanjing, China
| | - Jiangli Fu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Longhua Wu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, China
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47
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Yan C, Green E, Fukumori R, Protic N, Lee SH, Fernandez-Mulligan S, Raja R, Erdakos R, Mao Z, Yang S. An integrated quantum material testbed with multi-resolution photoemission spectroscopy. Rev Sci Instrum 2021; 92:113907. [PMID: 34852521 DOI: 10.1063/5.0072979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 10/30/2021] [Indexed: 06/13/2023]
Abstract
We present the development of a multi-resolution photoemission spectroscopy (MRPES) setup, which probes quantum materials in energy, momentum, space, and time. This versatile setup integrates three light sources in one photoemission setup and can conveniently switch between traditional angle-resolved photoemission spectroscopy (ARPES), time-resolved ARPES (trARPES), and micrometer-scale spatially resolved ARPES. It provides a first-time all-in-one solution to achieve an energy resolution of <4 meV, a time resolution of <35 fs, and a spatial resolution of ∼10 μm in photoemission spectroscopy. Remarkably, we obtain the shortest time resolution among the trARPES setups using solid-state nonlinear crystals for frequency upconversion. Furthermore, this MRPES setup is integrated with a shadow-mask assisted molecular beam epitaxy system, which transforms the traditional photoemission spectroscopy into a quantum device characterization instrument. We demonstrate the functionalities of this novel quantum material testbed using FeSe/SrTiO3 thin films and MnBi4Te7 magnetic topological insulators.
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Affiliation(s)
- Chenhui Yan
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Emanuel Green
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Riku Fukumori
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Nikola Protic
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Seng Huat Lee
- Department of Physics, Pennsylvania State University, University Park, State College, Pennslyvania, 16802, USA
| | | | - Rahim Raja
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Robin Erdakos
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Zhiqiang Mao
- Department of Physics, Pennsylvania State University, University Park, State College, Pennslyvania, 16802, USA
| | - Shuolong Yang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
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Fan Z, Mao Z, Yuan M, Chen R, Xia X. P59.13 The Prediction Performance of TP53 / RB1 Co-Mutation on Small-Cell Lung Cancer Transformation in Patients With Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Li X, Liu D, Liu C, Mao Z, Liu Y, Yi H, Zhou F. Conservative versus liberal oxygen therapy in relation to all-cause mortality among patients in the intensive care unit: A systematic review of randomized controlled trials with meta-analysis and trial sequential analysis. Med Intensiva 2021. [DOI: 10.1016/j.medin.2021.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Yang L, Tao Y, Zhu Y, Akter M, Wang K, Pan Z, Zhao Y, Zhang Q, Xu YQ, Chen R, Xu TT, Chen Y, Mao Z, Li D. Observation of superdiffusive phonon transport in aligned atomic chains. Nat Nanotechnol 2021; 16:764-768. [PMID: 33859389 DOI: 10.1038/s41565-021-00884-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Fascinating phenomena can occur as charge and/or energy carriers are confined in one dimension1-4. One such example is the divergent thermal conductivity (κ) of one-dimensional lattices, even in the presence of anharmonic interatomic interactions-a direct consequence of the Fermi-Pasta-Ulam-Tsingou paradox proposed in 19555. This length dependence of κ, also known as superdiffusive phonon transport, presents a classical anomaly of continued interest6-9. So far the concept has remained purely theoretical, because isolated single atomic chains of sufficient length have been experimentally unattainable. Here we report on the observation of a length-dependent κ extending over 42.5 µm at room temperature for ultrathin van der Waals crystal NbSe3 nanowires. We found that κ follows a 1/3 power law with wire length, which provides experimental evidence pointing towards superdiffusive phonon transport. Contrary to the classical size effect due to phonon-boundary scattering, the observed κ shows a 25-fold enhancement as the characteristic size of the nanowires decreases from 26 to 6.8 nm while displaying a normal-superdiffusive transition. Our analysis indicates that these intriguing observations stem from the transport of one-dimensional phonons excited as a result of elastic stiffening with a fivefold enhancement of Young's modulus. The persistent divergent trend of the observed thermal conductivity with sample length reveals a real possibility of creating novel van der Waals crystal-based thermal superconductors with κ values higher than those of any known materials.
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Affiliation(s)
- Lin Yang
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Yi Tao
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, P. R. China
| | - Yanglin Zhu
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Manira Akter
- Department of Mechanical Engineering and Engineering Science, The University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Ke Wang
- Materials Research Institute, Pennsylvania State University, University Park, PA, USA
| | - Zhiliang Pan
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Yang Zhao
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Qian Zhang
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Ya-Qiong Xu
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, USA
- Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, USA
| | - Renkun Chen
- Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, CA, USA
| | - Terry T Xu
- Department of Mechanical Engineering and Engineering Science, The University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Yunfei Chen
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, P. R. China
| | - Zhiqiang Mao
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Deyu Li
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA.
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