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Chen W, Bai Y, Fang P, Chen J, Wang X, Li Y, Luo X, Xiao Z, Iyer R, Shan F, Yuan T, Wu M, Huang X, Fang D, Yang Q, Zhang Y. Body mass index's effect on CRSwNP extends to pathological endotype and recurrence. Rhinology 2024; 0:3161. [PMID: 38416065 DOI: 10.4193/rhin23.402] [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: 02/29/2024]
Abstract
BACKGROUND Elevated body mass index (BMI) has been recognized as an important contributor to corticosteroid insensitivity in chronic rhinosinusitis with nasal polyps (CRSwNP). We aimed to delineate the effects of elevated BMI on immunological endotype and recurrence in CRSwNP individuals. METHODOLOGY A total of 325 patients with CRSwNP undergoing FESS were recruited and stratified by BMI. H&E staining was employed for histological evaluation. Characteristics of inflammatory patterns were identified by immunohistochemical staining. The predictive factors for recurrence were determined and evaluated by multivariable logistic regression analysis and the receiver operating characteristic (ROC) curves across all subjects and by weight group. RESULTS In all patients with CRSwNP, 26.15% subjects were classified as overweight/obese group across BMI categories and exhibited a higher symptom burden. The upregulated eosinophil/neutrophil-dominant cellular endotype and amplified type 2/ type 3 coexisting inflammation was present in overweight/obese compared to underweight/normal weight controls. Additionally, a higher recurrent proportion was shown in overweight/obese patients than that in underweight/normal weight cohorts. Multivariable logistic regression analysis identified BMI as an independent predictor for recurrence. The predictive capacity of each conventional parameter (tissue eosinophil and CLCs count, and blood eosinophil percentage) alone or in combination was poor in overweight/obese subjects. CONCLUSIONS Overweight/obese CRSwNP stands for a unique phenotype and endotype. Conventional parameters predicting recurrence are compromised in overweight/obese CRSwNP, and there is an urgent need for novel biomarkers that predict recurrence for these patients.
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Affiliation(s)
- W Chen
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Bai
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - P Fang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - J Chen
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X Wang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Li
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X Luo
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Z Xiao
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - R Iyer
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - F Shan
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - T Yuan
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - M Wu
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X Huang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - D Fang
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Q Yang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Zhang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diabetology, Guangzhou Key Laboratory of Mechanistic and Translational Obesity Research, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Zhang Z, Lei H, Duan S, Zhao Z, Chen M, Wang C, Fang D. Bioinspired Double-Broadband Switchable Microwave Absorbing Grid Structures with Inflatable Kresling Origami Actuators. Adv Sci (Weinh) 2024; 11:e2306119. [PMID: 38036422 PMCID: PMC10811514 DOI: 10.1002/advs.202306119] [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] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/12/2023] [Indexed: 12/02/2023]
Abstract
Tunable radar stealth structures are critical components for future military equipment because of their potential to further enhance the design space and performance. Some previous investigations have utilized simple origami structures as the basic adjusting components but failed to achieve the desired broadband microwave absorbing characteristic. Herein, a novel double-broadband switchable microwave absorbing grid structure has been developed with the actuators of inflatable Kresling origami structures. Geometric constraints are derived to endow a bistable feature with this origami configuration, and the stable states are switched by adjusting the internal pressure. An ultra-broadband microwave absorbing structure is proposed with a couple of complementary microwave stealth bands, and optimized by a particle swarm optimization algorithm. The superior electromagnetic performance results from the mode switch activating different absorbing components at corresponding frequencies. A digital adjusting strategy is applied, which effectively achieves a continuously adjusting effect. Further investigations show that the proposed structure possesses superior robustness. In addition, minimal interactions are found between adjacent grid units, and the electromagnetic performance is mainly related to the duty ratio of the units in different states. They have enhanced the microwave absorbing performance of grid structures through a tunable design, a provided a feasible paradigm for other tunable absorbers.
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Affiliation(s)
- Zhong Zhang
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Hongshuai Lei
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Shengyu Duan
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Zeang Zhao
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Mingji Chen
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Changxian Wang
- School of Materials Science and EngineeringNanyang Technological UniversitySingapore639798Singapore
| | - Daining Fang
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- State Key Laboratory for Turbulence and Complex SystemsCollege of EngineeringPeking UniversityBeijing100871P. R. China
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Zhang F, Zhang J, Fang D, Zhang Y, Wang D. Unusual magnetic interaction in CrTe: insights from machine-learning and empirical models. J Phys Condens Matter 2023; 36:135804. [PMID: 38091625 DOI: 10.1088/1361-648x/ad154f] [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] [Received: 09/21/2023] [Accepted: 12/13/2023] [Indexed: 12/28/2023]
Abstract
Chromium telluride (CrTe) has received much attention due to its small magnetic anisotropy, which hosts the potential for complex magnetic structures. However, its magnetic properties have been relatively unexplored with numerical simulations, as the magnetic interactions inside are quite unusual. In this study, we employ both a machine-learning model and an empirical model to investigate the magnetic phase transitions of bulk and monolayer CrTe, revealing the existence of unusual magnetic interaction, which can be captured by the machine-learning model but not the simple empirical model. Furthermore, our results also demonstrate that magnetic moments further apart exhibit stronger interactions than those in closer proximity, deviating from typical behavior.
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Affiliation(s)
- F Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - J Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - D Fang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Y Zhang
- School of Physics, Henan Normal University, Xinxiang 453007, People's Republic of China
| | - D Wang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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4
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Lun Y, Wang X, Kang J, Ren Q, Wang T, Han W, Gao Z, Huang H, Chen Y, Chen LQ, Fang D, Hong J. Ultralow Tip-Force Driven Sizable-Area Domain Manipulation through Transverse Flexoelectricity. Adv Mater 2023; 35:e2302320. [PMID: 37358059 DOI: 10.1002/adma.202302320] [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] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/19/2023] [Indexed: 06/27/2023]
Abstract
Deterministic control of ferroelectric domain is critical in the ferroelectric functional electronics. Ferroelectric polarization can be manipulated mechanically with a nano-tip through flexoelectricity. However, it usually occurs in a very localized area in ultrathin films, with possible permanent surface damage caused by a large tip-force. Here it is demonstrated that the deliberate engineering of transverse flexoelectricity offers a powerful tool for improving the mechanical domain switching. Sizable-area domain switching under an ultralow tip-force can be realized in suspended van der Waals ferroelectrics with the surface intact, due to the enhanced transverse flexoelectric field. The film thickness range for domain switching in suspended ferroelectrics is significantly improved by an order of magnitude to hundreds of nanometers, being far beyond the limited range of the substrate-supported ones. The experimental results and phase-field simulations further reveal the crucial role of the transverse flexoelectricity in the domain manipulation. This large-scale mechanical manipulation of ferroelectric domain provides opportunities for the flexoelectricity-based domain controls in emerging low-dimensional ferroelectrics and related devices.
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Affiliation(s)
- Yingzhuo Lun
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Xueyun Wang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Jiaqian Kang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Qi Ren
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Tingjun Wang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Wuxiao Han
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Ziyan Gao
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Houbing Huang
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, China
| | - Yabin Chen
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, China
| | - Long-Qing Chen
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China
| | - Jiawang Hong
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
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5
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Dong Y, Fu Y, He C, Fang D. A Hyper-Pseudoelastic Model of Cyclic Stress-Softening Effect for Rubber Composites. Polymers (Basel) 2023; 15:3033. [PMID: 37514422 PMCID: PMC10383534 DOI: 10.3390/polym15143033] [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: 06/18/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Rubber composites are hyperelastic materials with obvious stress-softening effects during the cyclic loading-unloading process. In previous studies, it is hard to obtain the stress responses of rubber composites at arbitrary loading-unloading orders directly. In this paper, a hyper-pseudoelastic model is developed to characterize the cyclic stress-softening effect of rubber composites with a fixed stretch amplitude at arbitrary loading-unloading order. The theoretical relationship between strain energy function and cyclic loading-unloading order is correlated by the hyper-pseudoelastic model directly. Initially, the basic laws of the cyclic stress-softening effect of rubber composites are revealed based on the cyclic loading-unloading experiments. Then, a theoretical relationship between the strain energy evolution function and loading-unloading order, as well as the pseudoelastic theory, is developed. Additionally, the basic constraints that the strain energy evolution function must satisfy in the presence or absence of residual deformation effect are derived. Finally, the calibration process of material parameters in the hyper-pseudoelastic model is also presented. The validity of the hyper-pseudoelastic model is demonstrated via the comparisons to experimental data of rubber composites with different filler contents. This paper presents a theoretical model for characterizing the stress-softening effect of rubber composites during the cyclic loading-unloading process. The proposed theoretical model can accurately predict the evolution of the mechanical behavior of rubber composites with the number of loading-unloading cycles, which provides scientific guidance for predicting the durability properties and analyzing the fatigue performance of rubber composites.
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Affiliation(s)
- Yifeng Dong
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Yutong Fu
- Collage of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Chunwang He
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
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6
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Jiao H, An J, Jia Y, Liu Q, Wang Z, Gao Y, Wang M, Fang D, Zhu H, Jiao S. Operando probing and adjusting of the complicated electrode process of multivalent metals at extreme temperature. Proc Natl Acad Sci U S A 2023; 120:e2301780120. [PMID: 37399420 PMCID: PMC10334782 DOI: 10.1073/pnas.2301780120] [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: 02/02/2023] [Accepted: 05/15/2023] [Indexed: 07/05/2023] Open
Abstract
Nearly half of the elements in the periodic table are extracted, refined, or plated using electrodeposition in high-temperature melts. However, operando observations and tuning of the electrodeposition process during realistic electrolysis operations are extremely difficult due to severe reaction conditions and complicated electrolytic cell, which makes the improvement of the process very blind and inefficient. Here, we developed a multipurpose operando high-temperature electrochemical instrument that combines operando Raman microspectroscopy analysis, optical microscopy imaging, and a tunable magnetic field. Subsequently, the electrodeposition of Ti-which is a typical polyvalent metal and generally shows a very complex electrode process-was used to verify the stability of the instrument. The complex multistep cathodic process of Ti in the molten salt at 823 K was systematically analyzed by a multidimensional operando analysis strategy involving multiple experimental studies, theoretical calculations, etc. The regulatory effect and its corresponding scale-span mechanism of the magnetic field on the electrodeposition process of Ti were also elucidated, which would be inaccessible with existing experimental techniques and is significant for the real-time and rational optimization of the process. Overall, this work established a powerful and universal methodology for in-depth analysis of high-temperature electrochemistry.
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Affiliation(s)
- Handong Jiao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing100081, PR China
| | - Jialiang An
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing100083, PR China
| | - Yongzheng Jia
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing100083, PR China
| | - Qiang Liu
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing100083, PR China
| | - Zhe Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing100083, PR China
| | - Yang Gao
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing100083, PR China
| | - Mingyong Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing100083, PR China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing100081, PR China
| | - Hongmin Zhu
- Tohoku University, Aobo-ku, Sendai980-8579, Japan
| | - Shuqiang Jiao
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing100083, PR China
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7
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Nie XQ, Huang CF, Yin Z, Yang Y, Zhou X, Fang D, Cao R, Liu QF, Lin R, Deng YJ, Yu GP. [Two cases of EB virus-positive diffuse large B-cell lymphoma with HAVCR2 mutation]. Zhonghua Nei Ke Za Zhi 2023; 62:863-866. [PMID: 37394859 DOI: 10.3760/cma.j.cn112138-20221018-00764] [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: 07/04/2023]
Affiliation(s)
- X Q Nie
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - C F Huang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Z Yin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y Yang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Zhou
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - D Fang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - R Cao
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Q F Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - R Lin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y J Deng
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G P Yu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Su R, Chen J, Zhang X, Wang W, Li Y, He R, Fang D. 3D-Printed Micro/Nano-Scaled Mechanical Metamaterials: Fundamentals, Technologies, Progress, Applications, and Challenges. Small 2023:e2206391. [PMID: 37026433 DOI: 10.1002/smll.202206391] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 02/08/2023] [Indexed: 06/19/2023]
Abstract
Micro/nano-scaled mechanical metamaterials have attracted extensive attention in various fields attributed to their superior properties benefiting from their rationally designed micro/nano-structures. As one of the most advanced technologies in the 21st century, additive manufacturing (3D printing) opens an easier and faster path for fabricating micro/nano-scaled mechanical metamaterials with complex structures. Here, the size effect of metamaterials at micro/nano scales is introduced first. Then, the additive manufacturing technologies to fabricate mechanical metamaterials at micro/nano scales are introduced. The latest research progress on micro/nano-scaled mechanical metamaterials is also reviewed according to the type of materials. In addition, the structural and functional applications of micro/nano-scaled mechanical metamaterials are further summarized. Finally, the challenges, including advanced 3D printing technologies, novel material development, and innovative structural design, for micro/nano-scaled mechanical metamaterials are discussed, and future perspectives are provided. The review aims to provide insight into the research and development of 3D-printed micro/nano-scaled mechanical metamaterials.
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Affiliation(s)
- Ruyue Su
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Jingyi Chen
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xueqin Zhang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Wenqing Wang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Ying Li
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Rujie He
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
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9
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Zhao XY, Gu TW, Fang D, Sun HX, Bi Y. [Association between serum sex hormone-binding globulin and non-alcoholic steatohepatitis]. Zhonghua Nei Ke Za Zhi 2022; 61:1239-1246. [PMID: 36323566 DOI: 10.3760/cma.j.cn112138-20220218-00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate the association between serum sex hormone-binding globulin (SHBG) and non-alcoholic steatohepatitis (NASH). Methods: In this cross-sectional study, a total of 371 middle-aged and young obese patients who were hospitalized and underwent liver puncture in Nanjing Drum Tower Hospital from January 2016 to April 2021 were included. The population was divided into control group (n=43) and non-alcoholic fatty liver disease (NAFLD) group (n=328) based on the non-alcoholic fatty liver disease activity score. Subjects in NAFLD group were further divided into non-alcoholic fatty liver (NAFL) (n=60), uncertain-NASH (n=172), and NASH (n=96). Serum SHBG was tested in patients with NAFLD who were divided into three subgroups according to tertiles. The liver pathological characteristics in different SHBG level subgroups were compared. The risk factors of NASH were analyzed by logistic regression. The prediction model of NASH noninvasive diagnosis was established by forward stepwise regression, and the diagnostic value of non-invasive model for NASH was evaluated by receiver operating characteristic (ROC) curve. Results: The median age in patients were (32±10) years old with a body mass index of (39.16±6.58) kg/m², including 236 females (63.6%). Serum SHBG level [M (Q1, Q3)] in NAFLD group was significantly lower than that in control group [16.90 (11.43, 23.00) vs. (23.45 (15.40, 31.22) mmol/L, P<0.05], and progressively diminished in NAFL, uncertain-NASH and NASH subgroups [(22.24±10.47), (20.57±19.58), (15.80±8.74) mmol; P for trend<0.05]. Compared with the high-leveled SHBG subgroup, the steatosis score (2.09±0.80 vs. 1.51±0.72, P<0.01) and lobular inflammation score (1.10±0.68 vs. 0.85±0.68, P<0.05) were significantly higher in the low-leveled SHBG group. Multivariate logistic regression analysis indicated that lower serum SHBG level was an independent risk factor for NASH (OR=2.527, 95%CI: 1.296 to 4.928, P<0.05). The area under ROC curve of SHBG combined with aspartate aminotransferase in predicting NASH in NAFLD patients was 0.752 (95%CI: 0.696 to 0.809). Conclusion: Low serum SHBG level is associated with NASH.
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Affiliation(s)
- X Y Zhao
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - T W Gu
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - D Fang
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - H X Sun
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Y Bi
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
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10
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Han Z, Xiao X, Chen J, Wei K, Wang Z, Yang X, Fang D. Bifunctional Metamaterials Incorporating Unusual Geminations of Poisson's Ratio and Coefficient of Thermal Expansion. ACS Appl Mater Interfaces 2022; 14:50068-50078. [PMID: 36283006 DOI: 10.1021/acsami.2c11702] [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: 06/16/2023]
Abstract
Natural materials overwhelmingly shrink laterally under stretching and expand upon heating. Through incorporating Poisson's ratio and coefficient of thermal expansion (PR and CTE) in unusual geminations, such as positive PR and negative CTE, negative PR and positive CTE, and even zero PR and zero CTE, bifunctional metamaterials would generate attractive shape control capacity. However, reported bifunctional metamaterials are only theoretically constructed by simple skeletal ribs, and the magnitudes of the bifunctions are still in quite narrow ranges. Here, we propose a methodology for generating novel bifunctional metamaterials consisting of engineering polymers. From concept to refinement, the topology and shape optimization are integrated for programmatically designing bifunctional metamaterials in various germinations of the PR and CTE. The underlying deformation mechanisms of the obtained bifunctions are distinctly revealed. All of the designs with complex architectures and material layouts are fabricated using the multimaterial additive manufacturing, and their effective properties are experimentally characterized. Good agreements of the design, simulation, and experiments are achieved. Especially, the accessible range of the bifunction, namely, PR and CTE, is remarkably enlarged nearly 4 times. These developed approaches open an avenue to explore the bifunctional metamaterials, which are the basis of myriad mechanical- and temperature-sensitive devices, e.g., morphing structures and high-precision components of the sensors/actuators in aerospace and electronical domains.
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Affiliation(s)
- Zhengtong Han
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan410082, People's Republic of China
| | - Xiaoyujie Xiao
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan410082, People's Republic of China
| | - Jiaxin Chen
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan410082, People's Republic of China
| | - Kai Wei
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan410082, People's Republic of China
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, Hunan410083, People's Republic of China
| | - Zhonggang Wang
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, Hunan410083, People's Republic of China
| | - Xujing Yang
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan410082, People's Republic of China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing100081, People's Republic of China
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11
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Yang L, Hong X, Li J, Ji CY, Han Y, Chen S, Jiang H, Song WL, Chen HS, Fang D. Rechargeable Metasurfaces for Dynamic Color Display Based on a Compositional and Mechanical Dual-Altered Mechanism. Research (Wash D C) 2022; 2022:9828757. [PMID: 38645680 PMCID: PMC11030115 DOI: 10.34133/2022/9828757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/26/2022] [Indexed: 04/23/2024]
Abstract
Dynamic color display can be realized by tunable optical metasurfaces based on the compositional or structural control. However, it is still a challenge to realize the efficient modulation by a single-field method. Here, we report a novel compositional and mechanical dual-altered rechargeable metasurface for reversible and broadband optical reconfiguration in both visible and near-infrared wavelength regions. By employing a simple fabrication and integration strategy, the continuous optical reconfiguration is manipulated through an electro-chemo-mechanical coupled process in a lithium ion battery, where lithiation and delithiation processes occur dynamically under a low electric voltage (≤1.5 V). By controlling the phase transformation from Si to Li xSi, both structural morphology and optical scattering could be rapidly and dramatically tailored within 30 s, exhibiting high-contrast colorization and decolorization in a large-area nanofilm and showing long cyclic stability. Significant wide-angle reconfiguration of high-resolution structural colors in bowtie metasurfaces is demonstrated from anomalous reflection. The results provide a multifield mechanism for reconfigurable photonic devices, and the new platform can be introduced to the multidimensional information encryption and storage.
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Affiliation(s)
- Le Yang
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures,
Institute of Advanced Structure Technology,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Xiaorong Hong
- Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (Ministry of Education),
Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems,
School of Physics,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Jiafang Li
- Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (Ministry of Education),
Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems,
School of Physics,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Chang-Yin Ji
- Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (Ministry of Education),
Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems,
School of Physics,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Yu Han
- Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (Ministry of Education),
Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems,
School of Physics,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Shanshan Chen
- Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (Ministry of Education),
Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems,
School of Physics,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Hanqing Jiang
- School of Engineering,
Westlake University,
Hangzhou 310024,
China
| | - Wei-Li Song
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures,
Institute of Advanced Structure Technology,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Hao-Sen Chen
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures,
Institute of Advanced Structure Technology,
Beijing Institute of Technology,
Beijing 100081,
China
| | - Daining Fang
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures,
Institute of Advanced Structure Technology,
Beijing Institute of Technology,
Beijing 100081,
China
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12
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Fang D, Liu B, Pei Y, Chen M, Zhang Y, Chen H, Gao R. Re-understanding Hsue-shen Tsien’s thoughts on technological sciences. Chin Sci Bull 2022. [DOI: 10.1360/tb-2022-0693] [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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13
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Cai S, Lun Y, Ji D, Lv P, Han L, Guo C, Zang Y, Gao S, Wei Y, Gu M, Zhang C, Gu Z, Wang X, Addiego C, Fang D, Nie Y, Hong J, Wang P, Pan X. Enhanced polarization and abnormal flexural deformation in bent freestanding perovskite oxides. Nat Commun 2022; 13:5116. [PMID: 36045121 PMCID: PMC9433432 DOI: 10.1038/s41467-022-32519-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/03/2022] [Indexed: 11/09/2022] Open
Abstract
Recent realizations of ultrathin freestanding perovskite oxides offer a unique platform to probe novel properties in two-dimensional oxides. Here, we observe a giant flexoelectric response in freestanding BiFeO3 and SrTiO3 in their bent state arising from strain gradients up to 3.5 × 107 m-1, suggesting a promising approach for realizing ultra-large polarizations. Additionally, a substantial change in membrane thickness is discovered in bent freestanding BiFeO3, which implies an unusual bending-expansion/shrinkage effect in the ferroelectric membrane that has never been seen before in crystalline materials. Our theoretical model reveals that this unprecedented flexural deformation within the membrane is attributable to a flexoelectricity-piezoelectricity interplay. The finding unveils intriguing nanoscale electromechanical properties and provides guidance for their practical applications in flexible nanoelectromechanical systems.
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Affiliation(s)
- Songhua Cai
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, 999077, Hong Kong.
| | - Yingzhuo Lun
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Dianxiang Ji
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, 999077, Hong Kong
| | - Peng Lv
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Lu Han
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Changqing Guo
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yipeng Zang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Si Gao
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Yifan Wei
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Min Gu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Chunchen Zhang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Zhengbin Gu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Xueyun Wang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Christopher Addiego
- Department of Physics and Astronomy, University of California, Irvine, CA, 92697, USA
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China.,State Key Laboratory for Turbulence and Complex Systems & Center for Applied Physics and Technology, College of Engineering, Peking University, Beijing, 100871, China
| | - Yuefeng Nie
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
| | - Jiawang Hong
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China.
| | - Peng Wang
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK.
| | - Xiaoqing Pan
- Department of Physics and Astronomy, University of California, Irvine, CA, 92697, USA. .,Department of Materials Science and Engineering, University of California, Irvine, CA, 92697, USA. .,Irvine Materials Research Institute, University of California, Irvine, CA, 92697, USA.
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14
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Zhang F, Zhang J, Nan H, Fang D, Zhang GX, Zhang Y, Liu L, Wang D. Magnetic phase transition of monolayer chromium trihalides investigated with machine learning: toward a universal magnetic Hamiltonian. J Phys Condens Matter 2022; 34:395901. [PMID: 35817029 DOI: 10.1088/1361-648x/ac8037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
The prediction of magnetic phase transitions often requires model Hamiltonians to describe the necessary magnetic interactions. The advance of machine learning provides an opportunity to build a unified approach that can treat various magnetic systems without proposing new model Hamiltonians. Here, we develop such an approach by proposing a novel set of descriptors that describes the magnetic interactions and training the artificial neural network (ANN) that plays the role of a universal magnetic Hamiltonian. We then employ this approach and Monte Carlo simulation to investigate the magnetic phase transition of two-dimensional monolayer chromium trihalides using the trained ANNs as energy calculator. We show that the machine-learning-based approach shows advantages over traditional methods in the investigation of ferromagnetic and antiferromagnetic phase transitions, demonstrating its potential for other magnetic systems.
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Affiliation(s)
- F Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - J Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - H Nan
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - D Fang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - G-X Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
| | - Y Zhang
- School of Physics, Henan Normal University, Xinxiang 453007, People's Republic of China
| | - L Liu
- Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources in Guangxi, Guilin University of Technology, Guilin, 541004, People's Republic of China
| | - D Wang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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15
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Huang Z, Wang W, Song WL, Wang M, Chen H, Jiao S, Fang D. Electrocatalysis for Continuous Multi-Step Reactions in Quasi-Solid-State Electrolytes Towards High-Energy and Long-Life Aluminum-Sulfur Batteries. Angew Chem Int Ed Engl 2022; 61:e202202696. [PMID: 35384209 DOI: 10.1002/anie.202202696] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 02/18/2022] [Indexed: 11/09/2022]
Abstract
Aluminum-sulfur (Al-S) batteries of ultrahigh energy-to-price ratios are a promising energy storage technology, while they suffer from a large voltage gap and short lifespan. Herein, we propose an electrocatalyst-boosting quasi-solid-state Al-S battery, which involves a sulfur-anchored cobalt/nitrogen co-doped graphene (S@CoNG) positive electrode and an ionic-liquid-impregnated metal-organic framework (IL@MOF) electrolyte. The Co-N4 sites in CoNG continuously catalyze the breaking of Al-Cl and S-S bonds and accelerate the sulfur conversion, endowing the Al-S battery with a shortened voltage gap of 0.43 V and a high discharge voltage plateau of 0.9 V. In the quasi-solid-state IL@MOF electrolytes, the shuttle effect of polysulfides has been inhibited, which stabilizes the reversible sulfur reaction, enabling the Al-S battery to deliver 820 mAh g-1 specific capacity and 78 % capacity retention after 300 cycles. This finding offers novel insights to design Al-S batteries for stable energy storage.
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Affiliation(s)
- Zheng Huang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Wei Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Wei-Li Song
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Mingyong Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Haosen Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Shuqiang Jiao
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China.,Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
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16
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Han M, Guo X, Chen X, Liang C, Zhao H, Zhang Q, Bai W, Zhang F, Wei H, Wu C, Cui Q, Yao S, Sun B, Yang Y, Yang Q, Ma Y, Xue Z, Kwak JW, Jin T, Tu Q, Song E, Tian Z, Mei Y, Fang D, Zhang H, Huang Y, Zhang Y, Rogers JA. Submillimeter-scale multimaterial terrestrial robots. Sci Robot 2022; 7:eabn0602. [PMID: 35613299 DOI: 10.1126/scirobotics.abn0602] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Robots with submillimeter dimensions are of interest for applications that range from tools for minimally invasive surgical procedures in clinical medicine to vehicles for manipulating cells/tissues in biology research. The limited classes of structures and materials that can be used in such robots, however, create challenges in achieving desired performance parameters and modes of operation. Here, we introduce approaches in manufacturing and actuation that address these constraints to enable untethered, terrestrial robots with complex, three-dimensional (3D) geometries and heterogeneous material construction. The manufacturing procedure exploits controlled mechanical buckling to create 3D multimaterial structures in layouts that range from arrays of filaments and origami constructs to biomimetic configurations and others. A balance of forces associated with a one-way shape memory alloy and the elastic resilience of an encapsulating shell provides the basis for reversible deformations of these structures. Modes of locomotion and manipulation span from bending, twisting, and expansion upon global heating to linear/curvilinear crawling, walking, turning, and jumping upon laser-induced local thermal actuation. Photonic structures such as retroreflectors and colorimetric sensing materials support simple forms of wireless monitoring and localization. These collective advances in materials, manufacturing, actuation, and sensing add to a growing body of capabilities in this emerging field of technology.
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Affiliation(s)
- Mengdi Han
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China
| | - Xiaogang Guo
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China.,Applied Mechanics Laboratory, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
| | - Xuexian Chen
- National Key Laboratory of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing 100871, China
| | - Cunman Liang
- Department of Electronic Engineering, The Chinese University of Hong Kong, New Territories, Hong Kong 999077, China
| | - Hangbo Zhao
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA.,Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Qihui Zhang
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Wubin Bai
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Fan Zhang
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
| | - Heming Wei
- Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai 200444, China
| | - Changsheng Wu
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Qinghong Cui
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China
| | - Shenglian Yao
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA.,School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Bohan Sun
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA.,Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Yiyuan Yang
- Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Quansan Yang
- Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Yuhang Ma
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhaoguo Xue
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
| | - Jean Won Kwak
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA.,Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Tianqi Jin
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
| | - Qing Tu
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Enming Song
- Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai 200433, China
| | - Ziao Tian
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Yongfeng Mei
- Department of Materials Science, Fudan University, Shanghai 200433, China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Haixia Zhang
- National Key Laboratory of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing 100871, China
| | - Yonggang Huang
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Yihui Zhang
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
| | - John A Rogers
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Neurological Surgery, Northwestern University, Evanston, IL 60208, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208, USA
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17
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Huang Z, Wang W, Song W, Wang M, Chen H, Jiao S, Fang D. Electrocatalysis for Continuous Multi‐Step Reactions in Quasi‐Solid‐State Electrolytes Towards High‐Energy and Long‐Life Aluminum–Sulfur Batteries. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202696] [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: 11/08/2022]
Affiliation(s)
- Zheng Huang
- State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 P. R. China
| | - Wei Wang
- State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 P. R. China
| | - Wei‐Li Song
- Institute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 P. R. China
| | - Mingyong Wang
- State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 P. R. China
| | - Haosen Chen
- Institute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 P. R. China
| | - Shuqiang Jiao
- State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 P. R. China
- Institute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 P. R. China
| | - Daining Fang
- Institute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 P. R. China
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18
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Luo S, Bai H, Huang R, Qu Z, Lv B, Fang D. An in situ micro-indentation apparatus for investigating mechanical parameters of thermal barrier coatings under temperature gradient. Rev Sci Instrum 2022; 93:045102. [PMID: 35489917 DOI: 10.1063/5.0083087] [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: 12/21/2021] [Accepted: 03/20/2022] [Indexed: 06/14/2023]
Abstract
Premature failure of thermal barrier coatings (TBCs) under a temperature gradient is an overriding concern in many applications, and their mechanical parameters are essential to failure analysis. In this study, an in situ micro-indentation apparatus, including a heating module, cooling module, and micro-indentation module, was developed to study the mechanical parameters of TBCs with a temperature gradient. The upper surface of the TBC was heated by radiation to simulate high-temperature service conditions, and the bottom surface was gas-cooled. Different temperature gradients are obtained by changing the velocity of the cooling gas. The temperatures through the thickness of the TBCs were analyzed by numerical simulations and experiments. During exposure to the temperature gradient, micro-indentation tests of the TBC samples were conducted to obtain their mechanical parameters. In situ micro-indentation tests at different cooling gas flow rates (0, 20, and 40 l/min) were performed on the TBCs. The elastic modulus and stress evolution of the TBCs were extracted by analyzing the load-displacement curves at different gas velocities. The elastic modulus remains almost constant with increasing velocity while the stress difference increases.
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Affiliation(s)
- Sangyu Luo
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Haoran Bai
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Ruizhe Huang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Zhaoliang Qu
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Bowen Lv
- National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, People's Republic of China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
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19
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Dong HW, Shen C, Zhao SD, Qiu W, Zheng H, Zhang C, Cummer SA, Wang YS, Fang D, Cheng L. Achromatic metasurfaces by dispersion customization for ultra-broadband acoustic beam engineering. Natl Sci Rev 2022; 9:nwac030. [PMID: 36726640 PMCID: PMC9883680 DOI: 10.1093/nsr/nwac030] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 06/21/2021] [Revised: 01/28/2022] [Accepted: 01/29/2022] [Indexed: 02/04/2023] Open
Abstract
Metasurfaces, the ultra-thin media with extraordinary wavefront modulation ability, have shown great promise for many potential applications. However, most of the existing metasurfaces are limited by narrow-band and strong dispersive modulation, which complicates their real-world applications and, therefore require strict customized dispersion. To address this issue, we report a general methodology for generating ultra-broadband achromatic metasurfaces with prescribed ultra-broadband achromatic properties in a bottom-up inverse-design paradigm. We demonstrate three ultra-broadband functionalities, including acoustic beam deflection, focusing and levitation, with relative bandwidths of 93.3%, 120% and 118.9%, respectively. In addition, we reveal a relationship between broadband achromatic functionality and element dispersion. All metasurface elements have anisotropic and asymmetric geometries with multiple scatterers and local cavities that synthetically support internal resonances, bi-anisotropy and multiple scattering for ultra-broadband customized dispersion. Our study opens new horizons for ultra-broadband highly efficient achromatic functional devices, with promising extension to optical and elastic metamaterials.
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Affiliation(s)
| | | | | | - Weibao Qiu
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hairong Zheng
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Chuanzeng Zhang
- Department of Civil Engineering, University of Siegen, D-57068 Siegen, Germany
| | - Steven A Cummer
- Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
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20
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Jiao H, Qu Z, Jiao S, Gao Y, Li S, Song WL, Chen H, Zhu H, Zhu R, Fang D. A 4D x-ray computer microtomography for high-temperature electrochemistry. Sci Adv 2022; 8:eabm5678. [PMID: 35138887 PMCID: PMC8827660 DOI: 10.1126/sciadv.abm5678] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
High-temperature electrochemistry is widely used in many fields. However, real-time observations and an in-depth understanding of the inside evolution of this system from an experimental perspective remain limited because of harsh reaction conditions and multiphysics fields. Here, we tackled this challenge with a high-temperature electrolysis facility developed in-house. This facility permits in situ x-ray computer microtomography (μ-CT) for nondestructive and quantitative three-dimensional (3D) imaging. In an electrorefining system, the μ-CT probed the dynamic evolution of 3D morphology and components of electrodes (4D). Subsequently, this 4D process was visually presented via reconstructed images. The results monitor the efficiency of the process, explore the dynamic mechanisms, and even offer real-time optimization. This 4D analysis platform is notable for in-depth combinations of traditional electrochemistry with digital twin technologies owing to its multiscale visualization and high efficiency of data extraction.
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Affiliation(s)
- Handong Jiao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China
| | - Zhaoliang Qu
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China
| | - Shuqiang Jiao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Yang Gao
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Shijie Li
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China
| | - Wei-Li Song
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China
| | - Haosen Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China
| | - Hongmin Zhu
- Tohoku University, 6-6-02, Aramaki-Aza-Aoba, Aobo-ku, Sendai 980-8579, Japan
| | - Rongqi Zhu
- College of Engineering, Peking University, Beijing 100871, PR China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China
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21
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Liu S, Li D, Wang Y, Zhou G, Ge K, Jiang L, Fang D. Flexible, high strength and multifunctional polyvinyl alcohol/MXene/polyaniline hydrogel enhancing skin wound healing. Biomater Sci 2022; 10:3585-3596. [DOI: 10.1039/d2bm00575a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract: Nature-inspired flexible and multifunctional hydrogels have become ideal materials for tissue repair. High strength, wear resistant, antibacterial and conductive hydrogels can be potentially applied in skin healing. However, they...
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22
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Qi J, Chen Z, Jiang P, Hu W, Wang Y, Zhao Z, Cao X, Zhang S, Tao R, Li Y, Fang D. Recent Progress in Active Mechanical Metamaterials and Construction Principles. Adv Sci (Weinh) 2022; 9:e2102662. [PMID: 34716676 PMCID: PMC8728820 DOI: 10.1002/advs.202102662] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/31/2021] [Indexed: 05/03/2023]
Abstract
Active mechanical metamaterials (AMMs) (or smart mechanical metamaterials) that combine the configurations of mechanical metamaterials and the active control of stimuli-responsive materials have been widely investigated in recent decades. The elaborate artificial microstructures of mechanical metamaterials and the stimulus response characteristics of smart materials both contribute to AMMs, making them achieve excellent properties beyond the conventional metamaterials. The micro and macro structures of the AMMs are designed based on structural construction principles such as, phase transition, strain mismatch, and mechanical instability. Considering the controllability and efficiency of the stimuli-responsive materials, physical fields such as, the temperature, chemicals, light, electric current, magnetic field, and pressure have been adopted as the external stimuli in practice. In this paper, the frontier works and the latest progress in AMMs from the aspects of the mechanics and materials are reviewed. The functions and engineering applications of the AMMs are also discussed. Finally, existing issues and future perspectives in this field are briefly described. This review is expected to provide the basis and inspiration for the follow-up research on AMMs.
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Affiliation(s)
- Jixiang Qi
- State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Zihao Chen
- State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Peng Jiang
- State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Wenxia Hu
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Yonghuan Wang
- State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Zeang Zhao
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Xiaofei Cao
- State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Shushan Zhang
- State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Ran Tao
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Ying Li
- State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
| | - Daining Fang
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and StructuresInstitute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081China
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23
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Hou X, Zhang R, Fang D. Flexible and robust polyimide membranes with adjustable surface structure and hierarchical pore distribution for oil/water emulsion and heavy oil separation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119769] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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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24
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Jiao H, Qu Z, Jiao S, Gao Y, Li S, Song W, Wang M, Chen H, Fang D. Quantificational 4D Visualization of Industrial Electrodeposition. Adv Sci (Weinh) 2021; 8:e2101373. [PMID: 34708941 PMCID: PMC8693065 DOI: 10.1002/advs.202101373] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 09/04/2021] [Indexed: 05/11/2023]
Abstract
Electrodeposition is a fundamental technology in modern society and has been widely used in metal plating and extraction, etc. However, extreme reaction conditions, including wide operation temperature ranges and corrosive media (molten salt/oxide systems as a particular example), inhibit direct in situ observation of the electrodeposition process. To visualize the electrode kinetics in such "black box," X-ray tomography is employed to monitor the electrochemical processes and three-dimensional (3D) evolution of morphology. Benefiting from the excellent penetration of X-ray, a non-destructive and non-contact in situ four-dimensional (4D) visualization of Ti deposition is realized. Real-time 3D reconstructed images reveal that the counterintuitive nucleation and growth process of a mesoscale Ti dendrite at both solid and liquid cathodes. According to 3D morphology evolution, unusual mechanism based on synergetic effect of the diffusion of metallic Ti and local field enhancement is achieved utilizing a simulation method based on a finite element method. This approach allows for timely and accurately regulating the electrodeposition process upon in situ monitored parameters. More importantly, the 4D technique upon operando X-ray tomography and numerical simulation can be easily applied to other electrodeposition systems, which will help deeply understand the internal kinetics and the precise optimization of the electrodeposition conditions.
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Affiliation(s)
- Handong Jiao
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Zhaoliang Qu
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Shuqiang Jiao
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing100083P. R. China
| | - Yang Gao
- State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing100083P. R. China
| | - Shijie Li
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Wei‐Li Song
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Mingyong Wang
- State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing100083P. R. China
| | - Haosen Chen
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
| | - Daining Fang
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
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Wu J, Yao S, Zhang H, Man W, Bai Z, Zhang F, Wang X, Fang D, Zhang Y. Liquid Crystal Elastomer Metamaterials with Giant Biaxial Thermal Shrinkage for Enhancing Skin Regeneration. Adv Mater 2021; 33:e2106175. [PMID: 34561930 DOI: 10.1002/adma.202106175] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 08/08/2021] [Indexed: 06/13/2023]
Abstract
Liquid crystal elastomers (LCEs) are a class of soft active materials of increasing interest, because of their excellent actuation and optical performances. While LCEs show biomimetic mechanical properties (e.g., elastic modulus and strength) that can be matched with those of soft biological tissues, their biointegrated applications have been rarely explored, in part, due to their high actuation temperatures (typically above 60 °C) and low biaxial actuation performances (e.g., actuation strain typically below 10%). Here, unique mechanics-guided designs and fabrication schemes of LCE metamaterials are developed that allow access to unprecedented biaxial actuation strain (-53%) and biaxial coefficient of thermal expansion (-33 125 ppm K-1 ), significantly surpassing those (e.g., -20% and -5950 ppm K-1 ) reported previously. A low-temperature synthesis method with use of optimized composition ratios enables LCE metamaterials to offer reasonably high actuation stresses/strains at a substantially reduced actuation temperature (46 °C). Such biocompatible LCE metamaterials are integrated with medical dressing to develop a breathable, shrinkable, hemostatic patch as a means of noninvasive treatment. In vivo animal experiments of skin repair with both round and cross-shaped wounds demonstrate advantages of the hemostatic patch over conventional strategies (e.g., medical dressing and suturing) in accelerating skin regeneration, while avoiding scar and keloid generation.
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Affiliation(s)
- Jun Wu
- AML, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Shenglian Yao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Hang Zhang
- AML, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Weitao Man
- Department of Neurosurgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, 102218, P. R. China
| | - Zhili Bai
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Fan Zhang
- AML, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Xiumei Wang
- School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yihui Zhang
- AML, Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing, 100084, P. R. China
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26
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Wang J, Liang H, Fang D, Huang Y, Miao Y, Yu Y, Gao Q. [Inhibition of mitochondrial reactive oxygen species reduces high glucose-induced pyroptosis and ferroptosis in H9C2 cardiac myocytes]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:980-987. [PMID: 34308846 DOI: 10.12122/j.issn.1673-4254.2021.07.03] [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] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To observe the effect of inhibiting mitochondrial oxidative stress and NLRP3 inflammasomes on high glucose (HG)-induced pyroptosis and ferroptosis in H9C2 cardiac muscle cells and explore the possible interactions between mitochondrial reactive oxygen species (ROS) and inflammasomes. METHODS H9C2 cells exposed to high glucose (35 mmol/L) were treated with the mitochondrial antioxidant mitoquinone (MitoQ), the NLRP3 antagonist MCC950, or both MCC950 and rotenone (a mitochondrial electron transport antagonist), and the cell viability was measured with CCK-8 assay. The cellular and mitochondrial ROS levels were measured using CellRox and Mitosox fluorescent probes, respectively. The cellular NLRP3 inflammasome level was detected with immunofluorescence assay, and the expressions of the key proteins related with pyroptosis and ferroptosis were determined with Western blotting. RESULTS HG exposure significantly lowered the viability of H9C2 cells (P < 0.01), reduced the expression of GPX4 protein (a key protein related with ferroptosis) (P < 0.01), and increased the fluorescence intensities of NLRP3 (P < 0.01) and ROS (at both the cellular and mitochondrial levels, P < 0.01) and the protein expressions of NLRP3 and GSDMD-NT (P < 0.01). Treatment with either MitoQ or MCC950 significantly increased the viability of HG-exposed cells (P < 0.01), increased GPX4 expression (P < 0.01), and reduced the fluorescence intensities of NLRP3 (P < 0.01) and cellular and mitochondrial ROS (P < 0.01) and the protein expressions of NLRP3 and GSDMD-NT (P < 0.05). Compared with MCC950 treatment, treatment with both MCC950 and rotenone significantly reduced the viability of HG-exposed cells (P < 0.01), lowered GPX4 expression (P < 0.01), and increased the fluorescence intensities of ROS and NLRP3 (P < 0.01) and the protein levels of NLRP3 and GSDMD-NT (P < 0.05). CONCLUSION MitoQ inhibits mitochondrial ROS production to reduce HGinduced NLRP3 inflammasome activation and thus suppress pyroptosis and ferroptosis of cardiac muscle cells. There may be an interaction between mitochondrial ROS and NLRP3 inflammasomes.
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Affiliation(s)
- J Wang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - H Liang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - D Fang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Y Huang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Y Miao
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Y Yu
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Q Gao
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
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Abstract
Electrochemical sensors are critical to artificial intelligence by virtue of capability of mimicking human skin to report sensing signals. But their practical applications are restricted by low sensitivity and limited cycling stability, which result from piezoionic mechanism with insufficient sensing response. Here, we report a highly sensitive ultrastable sensor based on proton-coupled electron transfer, which is different from piezoionic mechanism. The sensor gives a high sensing signal output of 117 mV, which is 16 times higher than that of counterpart device (7 mV). It delivers excellent working stability with performance retention as high as 99.13% over 10 000 bending cycles in air, exceeding that of the best-known sensors reported previously. The flexible sensor displays high sensitivity in detecting real-time signals of human activities with large and subtle deformations, including wrist bending, moving speed, pulse wave and voice vibration. Smart functions, such as braille language and handwriting recognitions, are demonstrated for artificial intelligence.
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Affiliation(s)
- Chao Lu
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
| | - Xiangbiao Liao
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Institute of Advanced Structure Technology, Beijing Institute of Technology, 100081 Beijing, China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, 100081 Beijing, China
| | - Xi Chen
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
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He Z, Xian H, Tang M, Chen Y, Lian Z, Fang D, Peng X, Hu D. DNA polymerase β may be involved in protecting human bronchial epithelial cells from the toxic effects induced by methyl tert-butyl ether exposure. Hum Exp Toxicol 2021; 40:2135-2144. [PMID: 34121485 DOI: 10.1177/09603271211022788] [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: 11/17/2022]
Abstract
Methyl tert-butyl ether (MTBE), a widely used gasoline additive and a ubiquitous environmental pollutant in many countries and regions, can cause various kinds of toxic effects on human health. However, the molecular mechanism underlying its toxic effects remains elusive. The present study aimed to explore the cytotoxicity, DNA damage and oxidative damage effects of MTBE on human bronchial epithelial cells (16HBE) and the possible role of DNA polymerase β (pol-β) in this process. RNA interference (RNAi) was used to obtain pol-β gene knocked-down cells (pol-β-). CCK-8 assay was adopted to analyze the cell viability. Alkaline single-cell gel electrophoresis (SCGE) was performed to detect the DNA damage effects of MTBE. The enzyme activity of GSH-Px, SOD, CAT and the level of MDA were assessed. The data indicated that when treated with MTBE at the concentration exceeding 50 μmol/L and for the time exceeding 24 h, the pol-β- exhibited significantly decreased cell viability and increased DNA damage effects, as compared to the control (P < 0.05). Furthermore, there was significant difference in the levels of GSH-pX, SOD, CAT and MDA between the pol-β- and the control (P < 0.05). Our investigation suggests that MTBE can cause obvious cytotoxicity, DNA damage and oxidative damage effects on 16HBE cells. DNA polymerase β may be involved in protecting 16HBE cells from the toxic effects induced by MTBE exposure. These findings provide a novel insight into the molecular mechanism underlying the toxic effects of MTBE on human cells.
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Affiliation(s)
- Z He
- Shiyan Institute of Preventive Medicine and Health Care, Baoan District, Shenzhen City, People's Republic of China.,Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - H Xian
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - M Tang
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - Y Chen
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - Z Lian
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - D Fang
- Department of Environmental Health, Center for Disease Control and Prevention of Shenzhen City, Shenzhen, People's Republic of China
| | - X Peng
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, People's Republic of China
| | - D Hu
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
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Khan MB, Wang C, Wang S, Fang D, Chen S. The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression. Nanotechnology 2021; 32:115701. [PMID: 33361558 DOI: 10.1088/1361-6528/abcfe8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nanoparticle-contained graphene foams have found more and more practical applications in recent years, which desperately requires a deep understanding on basic mechanics of this hybrid material. In this paper, the microscopic deformation mechanism and mechanical properties of such a hybrid material under uniaxial compression, that are inevitably encountered in applications and further affect its functions, are systematically studied by the coarse-grained molecular dynamics simulation method. Two major factors of the size and volume fraction of nanoparticles are considered. It is found that the constitutive relation of nanoparticle filled graphene foam materials consists of three parts: the elastic deformation stage, deformation with inner re-organization and the final compaction stage, which is much similar to the experimental measurement of pristine graphene foam materials. Interestingly, both the initial and intermediate modulus of such a hybrid material is significantly affected by the size and volume fraction of nanoparticles, due to their influences on the microstructural evolution. The experimentally observed 'spacer effect' of such a hybrid material is well re-produced and further found to be particle-size sensitive. With the increase of nanoparticle size, the micro deformation mechanism will change from nanoparticles trapped in the graphene sheet, slipping on the graphene sheet, to aggregation outside the graphene sheet. Beyond a critical relative particle size 0.26, the graphene-sheet-dominated deformation mode changes to be a nanoparticle-dominated one. The final microstructure after compression of the hybrid system converges to two stable configurations of the 'sandwiched' and 'randomly-stacked' one. The results should be helpful not only to understand the micro mechanism of such a hybrid material in different applications, but also to the design of advanced composites and devices based on porous materials mixed with particles.
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Affiliation(s)
- Muhammad Bilal Khan
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Chao Wang
- LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Shuai Wang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Shaohua Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
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Sun H, Tang Q, Fang D, Kong Y, Rong T, Yang D, Zhai Y, Wu Y. MA01.10 MDM2 Inhibitor APG-115 Suppresses Cell Proliferation and Tumor Growth in Preclinical Models Of NSCLC Harboring STK11 Mutations. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.205] [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: 10/21/2022]
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Zhu R, Qu Z, Yang S, Fang D. An in situ microtomography apparatus with a laboratory x-ray source for elevated temperatures of up to 1000 °C. Rev Sci Instrum 2021; 92:033704. [PMID: 33819997 DOI: 10.1063/5.0038026] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
An elevated-temperature in situ microtomography apparatus that can measure internal damage parameters under tensile loads at high temperatures up to 1000 °C is developed using a laboratory x-ray source. The maximum resolution of the apparatus can reach 3 µm by a reasonable design. A high-temperature environment is accomplished by means of a heating chamber based on a radiation technique using four halogen lamps with ellipsoidal reflectors. To obtain high resolution, the chamber is much smaller in the direction of the x-ray beam than in the other two directions. Two thin aluminum windows are chosen as the chamber walls perpendicular to and intersecting the x-ray beam. A material testing machine equipped with two synchronous rotating motors is specially designed for mechanical loading and 360° rotation of the specimen, and customized grips are developed to conduct tensile tests. A microfocus x-ray source and a high-resolution detector are used to produce and detect X rays, and the distances among the x-ray source, specimen, and high-resolution detector can be adjusted to obtain different resolutions. To show the main functions and usability of the apparatus, carbon-fiber-reinforced silicon-carbide matrix specimens are subjected to in situ x-ray microtomography tensile tests at 800 °C and 1000 °C, and the crack propagation behavior under thermomechanical coupling loads is studied.
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Affiliation(s)
- Rongqi Zhu
- College of Engineering, Peking University, Beijing 100871, People's Republic of China
| | - Zhaoliang Qu
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Shuo Yang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Daining Fang
- College of Engineering, Peking University, Beijing 100871, People's Republic of China
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32
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Xi L, Zhang Y, Gupta H, Terrill N, Wang P, Zhao T, Fang D. A multiscale study of structural and compositional changes in a natural nanocomposite: Osteoporotic bone with chronic endogenous steroid excess. Bone 2021; 143:115666. [PMID: 33007528 DOI: 10.1016/j.bone.2020.115666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 02/06/2023]
Abstract
Glucocorticoid (or steroid) induced osteoporosis (GIOP) is the leading form of secondary osteoporosis, affecting up to 50% of patients receiving chronic glucocorticoid therapy. Bone quantity (bone mass) changes in GIOP patients alone are inadequate to explain the increased fracture risk, and bone material changes (bone quality) at multiple levels have been implicated in the reduced mechanics. Quantitative analysis of specific material-level changes is limited. Here, we combined multiscale experimental techniques (scanning small/wide-angle X-ray scattering/diffraction, backscattered electron imaging, and X-ray radiography) to investigate these changes in a mouse model (Crh-120/+) with chronic endogenous steroid production. Nanoscale degree of orientation, the size distribution of mineral nanocrystals in the bone matrix, the spatial map of mineralization on the femoral cortex, and the microporosity showed significant changes between GIOP and the control, especially in the endosteal cortex. Our work can provide insight into the altered structure-property relationship leading to lowered mechanical properties in GIOP. SIGNIFICANCE STATEMENT: As a natural nanocomposite with a hierarchical structure, bone undergoes a staggered load transfer mechanism at the nanoscale. Disease and age-related deterioration of bone mechanics are caused by changes in bone structure at multiple length scales. Although clinical tools such as dual-energy X-ray absorptiometry (DXA) can be used to assess the reduction of bone quantity in these cases, little is known about how altered bone quality in diseased bone can increase fracture risk. It is clear that high-resolution diagnostic techniques need to be developed to narrow the gap between the onset and diagnosis of fracture-related changes. Here, by combining several scanning probe methods on a mouse model (Crh-120/+) of glucocorticoid-induced osteoporosis (GIOP), we developed quantitative and spatially resolved maps of ultrastructural changes in collagen fibrils and mineral nanocrystals, mineralization distribution (microscale), and morphology (macroscale) across femoral osteoporotic bone. Our results indicate that the altered bone remodelling in GIOP leads to 1) heterogeneous bone structure and mineralization, 2) reduced degree of orientation of collagen fibrils and mineral nanocrystals, and 3) reduced length and increased thickness of mineral nanocrystals, which contribute to mechanical abnormalities. The combined multiscale experimental approach presented here will be used to understand musculoskeletal degeneration in aging and osteoporosis.
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Affiliation(s)
- Li Xi
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China; School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK; Beamline I22, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Oxfordshire, UK.
| | - Yi Zhang
- Institution of High Energy Physics, Chinese Academy of Science, Beijing, China
| | - Himadri Gupta
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK
| | - Nick Terrill
- Beamline I22, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Oxfordshire, UK
| | - Pan Wang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China.
| | - Tian Zhao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China.
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China; State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing, China
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Zhang H, Wu J, Fang D, Zhang Y. Hierarchical mechanical metamaterials built with scalable tristable elements for ternary logic operation and amplitude modulation. Sci Adv 2021; 7:7/9/eabf1966. [PMID: 33627434 PMCID: PMC7904272 DOI: 10.1126/sciadv.abf1966] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/11/2021] [Indexed: 05/16/2023]
Abstract
Multistable mechanical metamaterials are artificial materials whose microarchitectures offer more than two different stable configurations. Existing multistable mechanical metamaterials mainly rely on origami/kirigami-inspired designs, snap-through instability, and microstructured soft mechanisms, with mostly bistable fundamental unit cells. Scalable, tristable structural elements that can be built up to form mechanical metamaterials with an extremely large number of programmable stable configurations remains illusive. Here, we harness the elastic tensile/compressive asymmetry of kirigami microstructures to design a class of scalable X-shaped tristable structures. Using these structure as building block elements, hierarchical mechanical metamaterials with one-dimensional (1D) cylindrical geometries, 2D square lattices, and 3D cubic/octahedral lattices are designed and demonstrated, with capabilities of torsional multistability or independent controlled multidirectional multistability. The number of stable states increases exponentially with the cell number of mechanical metamaterials. The versatile multistability and structural diversity allow demonstrative applications in mechanical ternary logic operators and amplitude modulators with unusual functionalities.
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Affiliation(s)
- Hang Zhang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Jun Wu
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, P.R. China.
| | - Yihui Zhang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China.
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
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Wu Y, Zhu S, Wang Z, Zhou P, Xie F, Zhou J, Chen HS, Song WL, Fang D. In-situ investigations of the inhomogeneous strain on the steel case of 18650 silicon/graphite lithium-ion cells. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137516] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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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Han D, Cao M, Li N, She D, Song W, Chen H, Jiao S, Fang D. Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous
Al‐Graphite
Batteries
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000389] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dan Han
- School of Materials Science & Engineering, Beijing Institute of Technology Beijing 100081 China
- Institute of Advanced Structure Technology, Beijing Institute of Technology Beijing 100081 China
| | - Mao‐Sheng Cao
- School of Materials Science & Engineering, Beijing Institute of Technology Beijing 100081 China
| | - Na Li
- School of Materials Science & Engineering, Beijing Institute of Technology Beijing 100081 China
- Institute of Advanced Structure Technology, Beijing Institute of Technology Beijing 100081 China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and Structures, Beijing Institute of Technology Beijing 100081 China
| | - Dong‐Mei She
- School of Materials Science & Engineering, Beijing Institute of Technology Beijing 100081 China
- Institute of Advanced Structure Technology, Beijing Institute of Technology Beijing 100081 China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and Structures, Beijing Institute of Technology Beijing 100081 China
| | - Wei‐Li Song
- Institute of Advanced Structure Technology, Beijing Institute of Technology Beijing 100081 China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and Structures, Beijing Institute of Technology Beijing 100081 China
| | - Haosen Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology Beijing 100081 China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and Structures, Beijing Institute of Technology Beijing 100081 China
| | - Shuqiang Jiao
- Institute of Advanced Structure Technology, Beijing Institute of Technology Beijing 100081 China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and Structures, Beijing Institute of Technology Beijing 100081 China
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing Beijing 100083 China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology Beijing 100081 China
- Beijing Key Laboratory of Lightweight Multi‐functional Composite Materials and Structures, Beijing Institute of Technology Beijing 100081 China
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Chen LL, Song WL, Li N, Jiao H, Han X, Luo Y, Wang M, Chen H, Jiao S, Fang D. Nonmetal Current Collectors: The Key Component for High-Energy-Density Aluminum Batteries. Adv Mater 2020; 32:e2001212. [PMID: 32886402 DOI: 10.1002/adma.202001212] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/28/2020] [Indexed: 06/11/2023]
Abstract
As one of the emerging safe energy-storage devices with high energy-to-cost ratio, nonaqueous aluminum batteries with enhanced energy density are intensively pursued by researchers. Although significant progress has been made on positive electrode materials, the effective energy density of aluminum batteries is still limited by the presence of high-density refractory metal current collectors, which are known to be electrochemically inert in highly acidic ionic-liquid electrolytes. To address such critical issues, here, a novel low-density (<2 g cm-3 ) nonmetal current collector is presented, which uses poly(ethylene terephthalate) (PET) substrates coated with indium tin oxide (ITO), with the purpose of significantly reducing the ratio of nonactive components in the electrodes. In addition to the excellent chemical and electrochemical stability (with voltage as high as ≈2.75 V vs Al3+ /Al), this nonmetal current collector, also encompassing a carboxymethyl cellulose (CMC) binder, allows as-assembled pouch cells to deliver a reversible specific capacity of ≈120 mAh g-1 at a current density of 50 mA g-1 . In comparison with the high-density refractory metal Mo or Ta current collectors, these nonmetal current collectors offer a novel strategy for constructing high-energy-density aluminum batteries by substituting the key components, with the aim of boosting the energy density of nonaqueous aluminum batteries.
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Affiliation(s)
- Li-Li Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Wei-Li Song
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Na Li
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Handong Jiao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xue Han
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yiwa Luo
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Mingyong Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Haosen Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Shuqiang Jiao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, P. R. China
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Xu G, Hao F, Weng M, Hong J, Pan F, Fang D. Strong influence of strain gradient on lithium diffusion: flexo-diffusion effect. Nanoscale 2020; 12:15175-15184. [PMID: 32667373 DOI: 10.1039/d0nr03746j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Lithium ion batteries (LIBs) work under a sophisticated external force field and the electrochemical properties could be modulated by strain. Owing to electro-mechanical coupling, the change of micro local structures can greatly affect the lithium (Li) diffusion rate in solid state electrolytes and the electrode materials of LIBs. In this study, we found, through first-principles calculations, that the strain gradient in bilayer graphene (BLG) significantly affects the Li diffusion barrier, which is termed as the flexo-diffusion effect. The Li diffusion barrier substantially decreases/increases under a positive/negative strain gradient, leading to a change of Li diffusion coefficient of several orders of magnitude at 300 K. Interestingly, the regulation effect of strain gradient is much more significant than that of a uniform strain field, which can have a remarkable effect on the rate performance of batteries, with a considerable increase in the ionic conductivity and a slight change of the original material structure. Moreover, our ab initio molecular dynamics simulations (AIMD) show that the asymmetric distorted lattice structure provides a driving force for Li diffusion, resulting in oriented diffusion along the positive strain gradient direction. We predict the new phenomenon of a flexo-diffusion effect from a theoretical calculation aspect, these findings could extend present LIB technologies by introducing a novel strain gradient engineering.
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Affiliation(s)
- Gao Xu
- State Key Laboratory for Turbulence and Complex Systems & Center for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, P.R. China.
| | - Feng Hao
- Department of Engineering Mechanics, Shandong University, Jinan 250100, P.R. China
| | - Mouyi Weng
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen 518055, P.R. China.
| | - Jiawang Hong
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China.
| | - Feng Pan
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen 518055, P.R. China.
| | - Daining Fang
- State Key Laboratory for Turbulence and Complex Systems & Center for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, P.R. China. and Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, P.R. China
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Bao G, Lu H, Liang Y, Xu Z, Shi Y, Li J, Kong W, Liu J, Fang D, Gong Y, He S, He Q, Li X, Ci W, Zhou L. The copy number variation signatures in upper tract urothelial carcinoma define distinct subtypes with prognostic relevance. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34089-1] [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: 11/16/2022] Open
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Xi L, Song Y, Wu W, Qu Z, Wen J, Liao B, Tao R, Ge J, Fang D. Investigation of bone matrix composition, architecture and mechanical properties reflect structure-function relationship of cortical bone in glucocorticoid induced osteoporosis. Bone 2020; 136:115334. [PMID: 32224161 DOI: 10.1016/j.bone.2020.115334] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 03/21/2020] [Accepted: 03/25/2020] [Indexed: 12/12/2022]
Abstract
Glucocorticoid induced osteoporosis (GIOP) is the most common negative consequence of long-term glucocorticoid treatment, leading to increased fracture risk followed by loss of mobility and high mortality risk. These biologically induced changes in bone quality at molecular level lead to changes both in bone matrix architecture and bone matrix composition. However, the quantitative details of changes in bone quality - and especially their link to reduced macroscale mechanical properties are still largely missing. In this study, a mouse model for glucocorticoid-induced osteoporosis (GIOP) was used to investigate mechanical and material alterations in bone cortex (natural nanocomposite) at different scale. By combining quantitative backscattered electron (qBSE) imaging, nanoindentation and high brilliance synchrotron X-ray nanomechanical imaging on a genetically modified mouse model of GIOP, we were able to quantify the local indentation modulus, mineralization distribution and the alterations of nanoscale structures and deformation mechanisms in the mid-diaphysis of femur, and relate them to the macroscopic mechanical changes. Our results showed clear and significant changes in terms of material quality of bone at nanoscale and microscale, which manifests itself in development of spatial heterogeneities in mineralization and indentation moduli across the bone organ, with potential implications for increased fracture risk.
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Affiliation(s)
- Li Xi
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China; School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK; Beamline I22, Diamond Light Source Ltd., Harwell Science and Innovation Campus, Oxfordshire, UK
| | - Yu Song
- College of Textiles, North Carolina State University, NC, USA
| | - Wenwang Wu
- Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, USA
| | - Zhaoliang Qu
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China
| | - Jiawei Wen
- Department of Mechanical Engineering, University of Moratuwa, Sri Lanka
| | - Binbin Liao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China.
| | - Ran Tao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China.
| | - Jingran Ge
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China.
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, China; State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing, China
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Wang S, Peng Z, Fang D, Chen S. A new Dirac nodal-ring semimetal made of 3D cross-linked graphene networks as lithium ion battery anode materials. Nanoscale 2020; 12:12985-12992. [PMID: 32530020 DOI: 10.1039/d0nr01674h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel lithium ion battery (LIB) anode material with high capacity is found, which is made of cross-linked graphene sheets. The new material, named bco-C20, has a 3D honeycomb structure composed of unit cells of 20 atoms, and exhibits a body-centered orthorhombic crystal structure. The thermal, dynamic, and mechanical stabilities of such a material are well evaluated by molecular dynamics simulation, phonon dispersion, and Born-Huang criteria. As a promising semimetal, bco-C20 possesses a unique electronic band structure with cross-linked Dirac nodal-rings. The Fermi velocities are from 8.25 × 105 m s-1 to 10.45 × 105 m s-1, indicating good electronic transport properties. A comparison with most of the 3D carbon materials demonstrates that bco-C20 also has the good material properties of high strength and fracture toughness that are very close to those of graphene. Furthermore, a negative Poisson's ratio of up to -0.25 is very helpful for the new material to bear compressive load. Most importantly, as a promising anode material in LIBs, bco-C20 has a high theoretical capacity of 893 mA h g-1, low diffusion barrier of 0.02-0.12 eV, average open-circuit voltage of 0.41 V, and negligible volume change of 3.7%. Some related properties of lithiated bco-C20 are also evaluated and discussed. This study should be helpful for expanding the family of 3D carbon materials with extraordinary properties as well as their promising applications in advanced energy fields.
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Affiliation(s)
- Shuaiwei Wang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China.
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41
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Yao K, Wei Z, Xie Y, Wang D, Liu H, Fang D, Ma M, Liu J. Lactation performance and nitrogen utilization of dairy cows on diets including unfermented or fermented yellow wine lees mix. Livest Sci 2020. [DOI: 10.1016/j.livsci.2020.104025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Guo L, Xu G, Tang G, Fang D, Hong J. Structural stability and optoelectronic properties of tetragonal MAPbI 3 under strain. Nanotechnology 2020; 31:225204. [PMID: 32059199 DOI: 10.1088/1361-6528/ab7679] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In recent years, organic-inorganic hybrid perovskites have attracted wide attention due to their excellent optoelectronic properties in the application of optoelectronic devices. In the manufacturing process of perovskite solar cells, perovskite films inevitably have residual stress caused by non-stoichiometry components and the external load. However, their effects on the structural stability and photovoltaic performance of perovskite solar cells are still not clear. In this work, we investigated the effects of external strain on the structural stability and optoelectronic properties of tetragonal MAPbI3 by using the first-principles calculations. We found that the migration barrier of I- ion increases in the presence of compressive strain and decreases with tensile strain, indicating that the compressive strain can enhance the structural stability of halide perovskites. In addition, the light absorption and electronic properties of MAPbI3 under compressive strain are also improved. The variations of the band gap under triaxial and biaxial strains are consistent within a certain range of strain, resulting from the fact that the band edge positions are mainly influenced by the Pb-I bond in the equatorial plane. Our results provide useful guidance for realizing the commercial applications of MAPbI3-based perovskite solar cells.
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Affiliation(s)
- Lei Guo
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
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Zhang Q, Kuang X, Weng S, Zhao Z, Chen H, Fang D, Qi HJ. Rapid Volatilization Induced Mechanically Robust Shape-Morphing Structures toward 4D Printing. ACS Appl Mater Interfaces 2020; 12:17979-17987. [PMID: 32196302 DOI: 10.1021/acsami.0c02038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Inspired by diverse shape-shifting phenomena in nature, various man-made shape programmable materials have been developed for applications in actuators, deployable devices, and soft robots. However, fabricating mechanically robust shape-morphing structures with on-demand, rapid shape-transformation capability, and high load-bearing capacity is still a great challenge. Herein, we report a mechanically robust and rapid shape-shifting material system enabled by the volatilization of a non-fully-reacted, volatile component in a partially cured cross-linking network obtained from photopolymerization. Volume shrinkage induced by the loss of the volatile component is exploited to drive complex shape transformations. After shape transformation, the residual monomers, cross-linkers, and photoinitiators that cannot volatilize still exist in the network, which is ready for a further photopolymerization to significantly stiffen the initial material. Guided by analytic models and finite element analysis, we experimentally demonstrate that a variety of shape transformations can be achieved, including both 2D-to-3D and 3D-to-3D' transformations, such as a buckyball self-folding from a 2D hexagonal lattice sheet and multiple pop-up structures transforming from their initial compact configurations. Moreover, we show that an ultra-low-weight 3D Miura-ori structure transformed from a 2D sheet can hold more than 1600 times its weight after stiffness improvement via postcuring. This work provides a versatile and low-cost method to fabricate rapid and robust shape-morphing structures for potential applications in soft robots, deployable antennas, and optical devices.
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Affiliation(s)
- Qiang Zhang
- The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- State Key Laboratory for Turbulence and Complex System, College of Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Xiao Kuang
- The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Shayuan Weng
- The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- College of Aerospace Engineering, Chongqing University, Chongqing, 400044, People's Republic of China
| | - Zeang Zhao
- State Key Laboratory for Turbulence and Complex System, College of Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Haosen Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Daining Fang
- State Key Laboratory for Turbulence and Complex System, College of Engineering, Peking University, Beijing, 100871, People's Republic of China
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - H Jerry Qi
- The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Yu Z, Jiao S, Tu J, Luo Y, Song WL, Jiao H, Wang M, Chen H, Fang D. Rechargeable Nickel Telluride/Aluminum Batteries with High Capacity and Enhanced Cycling Performance. ACS Nano 2020; 14:3469-3476. [PMID: 32119521 DOI: 10.1021/acsnano.9b09550] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Rechargeable aluminum-ion batteries (AIBs) possess significant advantages of high energy density, safety performance, and abundant natural resources, making them one of the desirable next-generation substitutes for lithium battery systems. However, the poor reversibility, short lifespan, and low capacity of positive materials have limited its practical applications. In comparison with semiconductors, the metallic nickel telluride (NiTe) alloy with enhanced electrical conductivity and fast electron transmission is a more favorable electrode material that could significantly decrease the kinetic barrier during battery operation for energy storage. In this paper, the NiTe nanorods prepared through a simple hydrothermal routine enable an initial reversible capacity of approximately 570 mA h g-1 (under the current density of 200 mA g-1) to be delivered on the basis of the ionic liquid electrolyte, along with the average voltage platform of about 1.30 V. Moreover, the cycling performance could be easily enhanced using a modified separator to prevent the diffusion of soluble intermediate species to the negative electrode side. At a high rate of 500 mA g-1, the NiTe nanorods could retain a specific capacity of about 307 mA h g-1 at the 100th cycle. The results have important implications for the research of transition metal tellurides as positive electrode materials for AIBs.
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Affiliation(s)
- Zhijing Yu
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, P.R. China
| | - Shuqiang Jiao
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, P.R. China
| | - Jiguo Tu
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, P.R. China
| | - Yiwa Luo
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, P.R. China
| | - Wei-Li Song
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, P.R. China
| | - Handong Jiao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, P.R. China
| | - Mingyong Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, P.R. China
| | - Haosen Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, P.R. China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, P.R. China
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Cheng T, Wang X, Zhang R, Pei Y, Ai S, He R, Fang D, Yang Y. Tensile properties of two-dimensional carbon fiber reinforced silicon carbide composites at temperatures up to 2300 °C. Ann Ital Chir 2020. [DOI: 10.1016/j.jeurceramsoc.2019.10.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [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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Mao W, Wang Y, Huang H, Zeng L, Wang Y, Lv L, Feng B, Zou C, Dai C, Tang Q, Fang D. In situ characterizations of mechanical behaviors of freestanding (Gd0.9Yb0.1)2Zr2O7 coatings by bending tests under different temperatures based on digital image correlation. Ann Ital Chir 2020. [DOI: 10.1016/j.jeurceramsoc.2019.07.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bao Y, Hong G, Chen Y, Chen J, Chen H, Song WL, Fang D. Customized Kirigami Electrodes for Flexible and Deformable Lithium-Ion Batteries. ACS Appl Mater Interfaces 2020; 12:780-788. [PMID: 31849209 DOI: 10.1021/acsami.9b18232] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Customized deformable lithium-ion batteries (LIBs) have attracted interest in the emerging power systems for flexible and wearable electronics. However, a key challenge for developing these batteries is the fabrication of customized deformable electrodes that exhibit strong mechanical tolerance and robust electrochemical performance during deformation. Here, free-standing customized kirigami electrodes for deformable LIBs are fabricated by an evolutionary printing method with universal viscous electrode inks and a customizable polydimethylsiloxane template. The electrodes comprise lithium iron phosphate or lithium titanium oxide nanoparticles with a conductive carbon nanotubes/poly(vinylidene fluoride) scaffold, which is ideal for electron transfer. The compact microstructure and kirigami pattern endow the electrodes with superior mechanical robustness (over 500 stretch-release cycles) and resistance stability both in unstretched and stretched states. Finite element analysis and corresponding experiment tests reveal ultralow strain inside the materials, showing less than 3% strain even under 100% stretch ratio. With 500-times stretched electrodes, the full-cell LIBs can still deliver a considerable discharge capacity of average 94.5 mA h g-1 at 0.3 C after 100 discharge/charge cycles. The integration of such outstanding mechanical stability, excellent electrochemical performance, and simple printing method with accessible starting materials presents promising opportunities for customizing deformable components for flexible energy storage devices.
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Affiliation(s)
- Yinhua Bao
- State Key Laboratory for Turbulence and Complex Systems & Center for Applied Physics and Technology, College of Engineering , Peking University , Beijing 100871 , China
| | - Guangqi Hong
- Institute of Advanced Structure Technology , Beijing Institute of Technology , Beijing 100081 , China
| | - Ya Chen
- Institute of Advanced Structure Technology , Beijing Institute of Technology , Beijing 100081 , China
| | - Jian Chen
- Institute of Advanced Structure Technology , Beijing Institute of Technology , Beijing 100081 , China
| | - Haosen Chen
- Institute of Advanced Structure Technology , Beijing Institute of Technology , Beijing 100081 , China
| | - Wei-Li Song
- Institute of Advanced Structure Technology , Beijing Institute of Technology , Beijing 100081 , China
| | - Daining Fang
- State Key Laboratory for Turbulence and Complex Systems & Center for Applied Physics and Technology, College of Engineering , Peking University , Beijing 100871 , China
- Institute of Advanced Structure Technology , Beijing Institute of Technology , Beijing 100081 , China
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Heslop KA, Rovini A, Hunt EG, Fang D, Morris ME, Christie CF, Gooz MB, DeHart DN, Dang Y, Lemasters JJ, Maldonado EN. JNK activation and translocation to mitochondria mediates mitochondrial dysfunction and cell death induced by VDAC opening and sorafenib in hepatocarcinoma cells. Biochem Pharmacol 2020; 171:113728. [PMID: 31759978 PMCID: PMC7309270 DOI: 10.1016/j.bcp.2019.113728] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/20/2019] [Indexed: 02/07/2023]
Abstract
The multikinase inhibitor sorafenib, and opening of voltage dependent anion channels (VDAC) by the erastin-like compound X1 promotes oxidative stress and mitochondrial dysfunction in hepatocarcinoma cells. Here, we hypothesized that X1 and sorafenib induce mitochondrial dysfunction by increasing reactive oxygen species (ROS) formation and activating c-Jun N-terminal kinases (JNKs), leading to translocation of activated JNK to mitochondria. Both X1 and sorafenib increased production of ROS and activated JNK. X1 and sorafenib caused a drop in mitochondrial membrane potential (ΔΨ), a readout of mitochondrial metabolism, after 60 min. Mitochondrial depolarization after X1 and sorafenib occurred in parallel with JNK activation, increased superoxide (O2•-) production, decreased basal and oligomycin sensitive respiration, and decreased maximal respiratory capacity. Increased production of O2•- after X1 or sorafenib was abrogated by JNK inhibition and antioxidants. S3QEL 2, a specific inhibitor of site IIIQo, at Complex III, prevented depolarization induced by X1. JNK inhibition by JNK inhibitors VIII and SP600125 also prevented mitochondrial depolarization. After X1, activated JNK translocated to mitochondria as assessed by proximity ligation assays. Tat-Sab KIM1, a peptide selectively preventing the binding of JNK to the outer mitochondrial membrane protein Sab, blocked the depolarization induced by X1 and sorafenib. X1 promoted cell death mostly by necroptosis that was partially prevented by JNK inhibition. These results indicate that JNK activation and translocation to mitochondria is a common mechanism of mitochondrial dysfunction induced by both VDAC opening and sorafenib.
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Affiliation(s)
- K A Heslop
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - A Rovini
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - E G Hunt
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - D Fang
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - M E Morris
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - C F Christie
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - M B Gooz
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - D N DeHart
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - Y Dang
- Department of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - J J Lemasters
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States; Department of Biochemistry & Molecular Biology, Medical University of South Carolina, Charleston, SC, United States; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States
| | - E N Maldonado
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States.
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Qu L, Sui Y, Zhang C, Li P, Dai X, Xu B, Fang D. POSS-functionalized graphene oxide hybrids with improved dispersive and smoke-suppressive properties for epoxy flame-retardant application. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109383] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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50
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Song W, Zhang Y, Zhang K, Wang K, Zhang L, Chen L, Huang Y, Chen M, Lei H, Chen H, Fang D. Ionic Conductive Gels for Optically Manipulatable Microwave Stealth Structures. Adv Sci (Weinh) 2020; 7:1902162. [PMID: 31993290 PMCID: PMC6974938 DOI: 10.1002/advs.201902162] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/06/2019] [Indexed: 05/07/2023]
Abstract
Smart structures with manipulatable properties are highly demanded in many fields. However, there is a critical challenge in the pursuit of transparent windows that allow optical waves (wavelength of µm-nm) for transmitting while blocking microwave (wavelength of cm) in terms of absorbing electromagnetic energy, specifically for meeting the frequency requirement for the 5th generation (5G) mobile networks. For fundamentally establishing novel manipulatable microwave absorbing structures, here, new polymeric aqueous gels as both optically transparent materials and microwave absorbing materials are demonstrated, in which polar networks play significant roles in attenuating electromagnetic energy. By manipulating the hydrogen bonding networks, the resulting optically transparent solid-state gels are able to offer the capabilities for absorbing microwaves. Interestingly, such gels can be switched into an optically opaque state via converting the amorphous state into a polycrystal state when the temperature is decreased. Such ionic conductive gels can endow the assembled sandwich windows with effective microwave absorbing capability in the range of 15-40 GHz, covering a branch of 5G frequency bands. The results highlight a new strategy for using ionic conductive gels to design and fabricate manipulatable microwave stealth structures for various applications.
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Affiliation(s)
- Wei‐Li Song
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
| | - Ya‐Jing Zhang
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
- School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081P. R. China
| | - Kai‐Lun Zhang
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
- School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081P. R. China
| | - Ke Wang
- Key Laboratory of Space UtilizationTechnology and Engineering Center for space UtilizationChinese Academy of SciencesBeijing100094China
| | - Lu Zhang
- Key Laboratory of Space UtilizationTechnology and Engineering Center for space UtilizationChinese Academy of SciencesBeijing100094China
| | - Li‐Li Chen
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
- School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081P. R. China
| | - Yixing Huang
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
| | - Mingji Chen
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
| | - Hongshuai Lei
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
| | - Haosen Chen
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
| | - Daining Fang
- Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing100081P. R. China
- Beijing Key Laboratory of Lightweight Multi‐Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing100081P. R. China
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