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Godínez-García FJ, Guerrero-Rivera R, Martínez-Rivera JA, Gamero-Inda E, Ortiz-Medina J. Advances in two-dimensional engineered nanomaterials applications for the agro- and food-industries. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023. [PMID: 36922737 DOI: 10.1002/jsfa.12556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/09/2023] [Accepted: 03/16/2023] [Indexed: 06/18/2023]
Abstract
Two-dimensional nanomaterials, such as graphene, transition metal dichalcogenides, MXenes, and other layered compounds, are the subject of intense theoretical and experimental research for applications in a wide range of advanced technological solutions, given their outstanding physical, chemical, and mechanical properties. In the context of food science and technology, their contributions are starting to appear, based on the advantages that two-dimensional nanostructures offer to agricultural- and food-related key topics, such as sustainable water use, nano-agrochemicals, novel nanosensing devices, and smart packaging technologies. These application categories facilitate the grasping of the current and potential uses of such advanced nanomaterials in the field, backed by their advantageous physical, chemical, and structural properties. Developments for water cleaning and reuse, efficient nanofertilizers and pesticides, ultrasensitive sensors for food contamination, and intelligent nanoelectronic disposable food packages are among the most promising application examples reviewed here and demonstrate the tremendous impact that further developments would have in the area as the fundamental and applied research of two-dimensional nanostructures continues. We expect this work will contribute to a better understanding of the promising characteristics of two-dimensional nanomaterials that could be used for the design of novel and feasible solutions in the agriculture and food areas. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Francisco Javier Godínez-García
- Division of Research and Postgraduate Studies and Department of Electrical/Electronics Engineering, TecNM/Instituto Tecnológico de Durango, Durango, Mexico
| | - Rubén Guerrero-Rivera
- Division of Research and Postgraduate Studies and Department of Electrical/Electronics Engineering, TecNM/Instituto Tecnológico de Durango, Durango, Mexico
| | - José Antonio Martínez-Rivera
- Division of Research and Postgraduate Studies and Department of Electrical/Electronics Engineering, TecNM/Instituto Tecnológico de Durango, Durango, Mexico
| | - Eduardo Gamero-Inda
- Division of Research and Postgraduate Studies and Department of Electrical/Electronics Engineering, TecNM/Instituto Tecnológico de Durango, Durango, Mexico
| | - Josué Ortiz-Medina
- Division of Research and Postgraduate Studies and Department of Electrical/Electronics Engineering, TecNM/Instituto Tecnológico de Durango, Durango, Mexico
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2
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Mohamed F, Ahmad MM, Hameed TA. Greener synthesis of lightweight, self‐standing
PMMA
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CoFe
2
O
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polymeric film for magnetic, electronic, and terahertz shielding applications. POLYM ADVAN TECHNOL 2023. [DOI: 10.1002/pat.5984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Fathia Mohamed
- Spectroscopy Department Physics Research Institute, National Research Centre Giza Egypt
| | - Manal M. Ahmad
- Chemical Engineering and Pilot Plant Department Engineering Research and Renewable Energy Institute, National Research Centre Giza Egypt
| | - Talaat A. Hameed
- Solid‐State Physics Department Physics Research Institute, National Research Centre Giza Egypt
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3
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Abdul Kadar CH, Faisal M, Maruthi N, Raghavendra N, Prasanna BP, Manohara SR. Corrosion-Resistant Polyaniline-Coated Zinc Tungstate Nanocomposites with Enhanced Electric Properties for Electromagnetic Shielding Applications. Macromol Res 2022. [DOI: 10.1007/s13233-022-0067-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Ren Z, Xu J, Liu J, Li B, Zhou C, Sheng Z. Active and Smart Terahertz Electro-Optic Modulator Based on VO 2 Structure. ACS APPLIED MATERIALS & INTERFACES 2022; 14:26923-26930. [PMID: 35652202 DOI: 10.1021/acsami.2c04736] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Modulating terahertz (THz) waves actively and smartly through an external field is highly desired in the development of THz spectroscopic devices. Here, we demonstrate an active and smart electro-optic THz modulator based on a strongly correlated electron oxide vanadium dioxide (VO2). With milliampere current excitation on the VO2 thin film, the transmission, reflection, absorption, and phase of THz waves can be modulated efficiently. In particular, the antireflection condition can be actively achieved and the modulation depth reaches 99.9%, accompanied by a 180° phase switching. Repeated and current scanning experiments confirm the high stability and multibit modulation of this electro-optic modulation. Most strikingly, by utilizing a feedback loop of "THz-electro-THz" geometry, a smart electro-optic THz control is realized. For instance, the antireflection condition can be stabilized precisely no matter what the initial condition is and how the external environment changes. The proposed electro-optic THz modulation method, taking advantage of strongly correlated electron material, opens up avenues for the realization of THz smart devices.
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Affiliation(s)
- Zhuang Ren
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jinyi Xu
- Anhui University, Hefei 230601, P. R. China
| | | | - Bolin Li
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Chun Zhou
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Zhigao Sheng
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, P. R. China
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Li J, Liu X, Feng Y, Yin J. Recent progress in polymer/two-dimensional nanosheets composites with novel performances. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101505] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Zhang Y, Ma Z, Ruan K, Gu J. Flexible Ti 3C 2T x /(Aramid Nanofiber/PVA) Composite Films for Superior Electromagnetic Interference Shielding. RESEARCH (WASHINGTON, D.C.) 2022; 2022:9780290. [PMID: 35211678 PMCID: PMC8832284 DOI: 10.34133/2022/9780290] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/22/2021] [Indexed: 02/05/2023]
Abstract
Multifunctional electromagnetic interference (EMI) shielding materials would solve electromagnetic radiation and pollution problems from electronic devices. Herein, the directional freeze-drying technology is utilized to prepare the aramid nanofiber/polyvinyl alcohol aerogel with a directionally porous structure (D-ANF/PVA), and the Ti3C2Tx dispersion is fully immersed into the D-ANF/PVA aerogel via ultrasonication and vacuum-assisted impregnation. Ti3C2Tx/(ANF/PVA) EMI shielding composite films with directionally ordered structure (D-Ti3C2Tx/(ANF/PVA)) are then prepared by freeze-drying and hot pressing. Constructing a directionally porous structure enables the highly conductive Ti3C2Tx nanosheets to be wrapped on the directionally porous D-ANF/PVA framework in order arrangement and overlapped with each other. And the hot pressing process effectively reduces the layer spacing between the stacked wavy D-ANF/PVA, to form a large number of Ti3C2Tx-Ti3C2Tx continuous conductive paths, which significantly improves the conductivity of the D-Ti3C2Tx/(ANF/PVA) EMI shielding composite film. When the amount of Ti3C2Tx is 80 wt%, the EMI shielding effectiveness (EMI SE) and specific SE (SSE/t) of D-Ti3C2Tx/(ANF/PVA) EMI shielding composite film achieve 70 dB and 13790 dB·cm2·g−1 (thickness and density of 120 μm and 0.423 g·cm−3), far superior to random-structured Ti3C2Tx/(ANF/PVA) (R-Ti3C2Tx/(ANF/PVA)) composite film (46 dB and 9062 dB·cm2·g−1, respectively) via blending-freeze-drying followed by hot pressing technology. Meanwhile, the D-Ti3C2Tx/(ANF/PVA) EMI shielding composite film possesses excellent flexibility and foldability.
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Affiliation(s)
- Yali Zhang
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Zhonglei Ma
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Kunpeng Ruan
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Junwei Gu
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
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Synergistic Strengthening of Mechanical Properties and Electromagnetic Interference Shielding Performance of Carbon Nanotubes (CNTs) Reinforced Magnesium Matrix Composites by CNTs Induced Laminated Structure. MATERIALS 2021; 15:ma15010300. [PMID: 35009446 PMCID: PMC8746023 DOI: 10.3390/ma15010300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/22/2021] [Accepted: 12/28/2021] [Indexed: 11/16/2022]
Abstract
In this study, we reported a laminated CNTs/Mg composite fabricated by spray-deposition and subsequent hot-press sintering, which realized simultaneous enhancement effects on strength and electromagnetic interference (EMI) shielding effectiveness (SE) by the introduced CNTs and CNT induced laminated 'Mg-CNT-Mg' structure. It was found that the CNTs/Mg composite with 0.5 wt.% CNTs not only exhibited excellent strength-toughness combination but also achieved a high EMI SE of 58 dB. The CNTs increased the strength of the composites mainly by the thermal expansion mismatch strengthening and blocking dislocation movements. As for toughness enhancement, CNTs induced laminated structure redistributes the local strain effectively and alleviates the strain localization during the deformation process. Moreover, it could also hinder the crack propagation and cause crack deflection, which resulted in an increment of the required energy for the failure of CNTs/Mg composites. Surprisingly, because of the laminated structure induced by introducing CNTs, the composite also exhibited an outperforming EMI SE in the X band (8.2-12.4 GHz). The strong interactions between the laminated 'Mg-CNT-Mg' structure and the incident electromagnetic waves are responsible for the increased absorption of the electromagnetic radiation. The lightweight CNTs/Mg composite with outstanding mechanical properties and simultaneously increased EMI performance could be employed as shell materials for electronic packaging components or electromagnetic absorbers.
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Sudhindra S, Rashvand F, Wright D, Barani Z, Drozdov AD, Baraghani S, Backes C, Kargar F, Balandin AA. Specifics of Thermal Transport in Graphene Composites: Effect of Lateral Dimensions of Graphene Fillers. ACS APPLIED MATERIALS & INTERFACES 2021; 13:53073-53082. [PMID: 34705408 DOI: 10.1021/acsami.1c15346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We report on the investigation of thermal transport in noncured silicone composites with graphene fillers of different lateral dimensions. Graphene fillers are comprised of few-layer graphene flakes with lateral sizes in the range from 400 to 1200 nm and the number of atomic planes from 1 to ∼100. The distribution of the lateral dimensions and thicknesses of graphene fillers has been determined via atomic force microscopy statistics. It was found that in the examined range of the lateral dimensions, the thermal conductivity of the composites increases with increasing size of the graphene fillers. The observed difference in thermal properties can be related to the average gray phonon mean free path in graphene, which has been estimated to be around ∼800 nm at room temperature. The thermal contact resistance of composites with graphene fillers of 1200 nm lateral dimensions was also smaller than that of composites with graphene fillers of 400 nm lateral dimensions. The effects of the filler loading fraction and the filler size on the thermal conductivity of the composites were rationalized within the Kanari model. The obtained results are important for the optimization of graphene fillers for applications in thermal interface materials for heat removal from high-power-density electronics.
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Affiliation(s)
- Sriharsha Sudhindra
- Phonon Optimized Engineered Materials Center, University of California, Riverside, California 92521, United States
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, California 92521, United States
| | - Farnia Rashvand
- Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, Heidelberg 69120, Germany
| | - Dylan Wright
- Phonon Optimized Engineered Materials Center, University of California, Riverside, California 92521, United States
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, California 92521, United States
| | - Zahra Barani
- Phonon Optimized Engineered Materials Center, University of California, Riverside, California 92521, United States
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, California 92521, United States
| | - Aleksey D Drozdov
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, Aalborg 9220, Denmark
| | - Saba Baraghani
- Phonon Optimized Engineered Materials Center, University of California, Riverside, California 92521, United States
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
| | - Claudia Backes
- Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, Heidelberg 69120, Germany
| | - Fariborz Kargar
- Phonon Optimized Engineered Materials Center, University of California, Riverside, California 92521, United States
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, California 92521, United States
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
| | - Alexander A Balandin
- Phonon Optimized Engineered Materials Center, University of California, Riverside, California 92521, United States
- Department of Electrical and Computer Engineering, Bourns College of Engineering, University of California, Riverside, California 92521, United States
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9
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Liu C, Wu W, Drummer D, Wang Y, Chen Q, Liu X, Schneider K. Significantly enhanced thermal conductivity of polymer composites via establishing double-percolated expanded graphite/multi-layer graphene hybrid filler network. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110768] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Zhang Y, Ruan K, Gu J. Flexible Sandwich-Structured Electromagnetic Interference Shielding Nanocomposite Films with Excellent Thermal Conductivities. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101951. [PMID: 34523229 DOI: 10.1002/smll.202101951] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/01/2021] [Indexed: 05/21/2023]
Abstract
With the rapid development and popularization of smart, portable, and wearable flexible electronic devices, urgent demands have been raised for flexible electromagnetic interference (EMI) shielding films to solve related electromagnetic pollution problems. With polyvinyl alcohol (PVA) as polymer matrix, the sandwich-structured EMI shielding nanocomposite films are prepared via electrospinning-laying-hot pressing technology, where Fe3 O4 /PVA composite electrospun nanofibers in the top and bottom layers and Ti3 C2 Tx /PVA composite electrospun nanofibers in the middle layer. Owing to the electrospinning process and the successful construction of the sandwich structure, when the amounts of Ti3 C2 Tx and Fe3 O4 are respectively only 13.3 and 26.7 wt%, the EMI shielding effectiveness (EMI SE) of the sandwich-structured EMI shielding nanocomposite films reach 40 dB with the thickness of 75 µm, higher than that of (Fe3 O4 /Ti3 C2 Tx )/PVA EMI shielding nanocomposite films (21 dB) prepared based on blending-electrospinning-hot pressing process under the same amounts of fillers. Furthermore, the prepared sandwich-structured EMI shielding nanocomposite films possess excellent thermal conductivities and mechanical properties. This novel kind of flexible sandwich-structured EMI shielding nanocomposite films with excellent EMI shielding performances, thermal conductivities, and mechanical properties presents broad application prospects in the fields of EMI shielding and protection for high-power, portable, and wearable flexible electronic devices.
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Affiliation(s)
- Yali Zhang
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Kunpeng Ruan
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Junwei Gu
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
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11
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Meng Q, Araby S, Oh J, Chand A, Zhang X, Kenelak V, Ma J, Liu T, Ma J. Accurate self‐damage detection by electrically conductive epoxy/graphene nanocomposite film. J Appl Polym Sci 2021. [DOI: 10.1002/app.50452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qingshi Meng
- College of Aerospace Engineering Shenyang Aerospace University Shenyang China
| | - Sherif Araby
- School of Engineering and Digital Sciences Nazarbayev University Nur‐Sultan Kazakhstan
- Department of Mechanical Engineering, Benha Faculty of Engineering Benha University Benha Egypt
| | - Jeong‐A Oh
- University of South Australia UniSA STEM and Future Industries Institute Mawson Lakes South Australia Australia
| | - Aron Chand
- College of Aerospace Engineering Shenyang Aerospace University Shenyang China
| | - Xuming Zhang
- College of Aerospace Engineering Shenyang Aerospace University Shenyang China
| | - Vincent Kenelak
- College of Aerospace Engineering Shenyang Aerospace University Shenyang China
| | - Jian Ma
- Administrative Department Shenyang Aerospace University Shenyang China
| | - Tianqing Liu
- NICM Health Research Institute Western Sydney University Sydney New South Wales Australia
| | - Jun Ma
- University of South Australia UniSA STEM and Future Industries Institute Mawson Lakes South Australia Australia
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12
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Barani Z, Kargar F, Ghafouri Y, Baraghani S, Sudhindra S, Mohammadzadeh A, Salguero TT, Balandin AA. Electromagnetic-Polarization-Selective Composites with Quasi-1D Van der Waals Fillers: Nanoscale Material Functionality That Mimics Macroscopic Systems. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21527-21533. [PMID: 33929179 DOI: 10.1021/acsami.1c03204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report on the preparation of flexible polymer composite films with aligned metallic fillers composed of atomic chain bundles of quasi-one-dimensional (1D) van der Waals material, tantalum triselenide (TaSe3). The material functionality, embedded at the nanoscale level, is achieved by mimicking the design of an electromagnetic aperture grid antenna. The processed composites employ chemically exfoliated TaSe3 nanowires as the grid building blocks incorporated within the thin film. Filler alignment is achieved using the "blade coating" method. Measurements conducted in the X-band frequency range demonstrate that the electromagnetic transmission through such films can be varied significantly by changing the relative orientations of the quasi-1D fillers and the polarization of the electromagnetic wave. We argue that such polarization-sensitive polymer films with unique quasi-1D metallic fillers are applicable to advanced electromagnetic interference shielding in future communication systems.
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Affiliation(s)
- Zahra Barani
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, California 92521, United States
| | - Fariborz Kargar
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, California 92521, United States
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
| | - Yassamin Ghafouri
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Saba Baraghani
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, California 92521, United States
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
| | - Sriharsha Sudhindra
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, California 92521, United States
| | - Amirmahdi Mohammadzadeh
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, California 92521, United States
| | - Tina T Salguero
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Alexander A Balandin
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, California 92521, United States
- Material Science and Engineering Program, University of California, Riverside, California 92521, United States
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Barani Z, Kargar F, Ghafouri Y, Ghosh S, Godziszewski K, Baraghani S, Yashchyshyn Y, Cywiński G, Rumyantsev S, Salguero TT, Balandin AA. Electrically Insulating Flexible Films with Quasi-1D van der Waals Fillers as Efficient Electromagnetic Shields in the GHz and Sub-THz Frequency Bands. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007286. [PMID: 33576041 DOI: 10.1002/adma.202007286] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/10/2020] [Indexed: 05/02/2023]
Abstract
Polymer composite films containing fillers comprising quasi-1D van der Waals materials, specifically transition metal trichalcogenides with 1D structural motifs that enable their exfoliation into bundles of atomic threads, are reported. These nanostructures are characterized by extremely large aspect ratios of up to ≈106 . The polymer composites with low loadings of quasi-1D TaSe3 fillers (<3 vol%) reveal excellent electromagnetic interference shielding in the X-band GHz and extremely high frequency sub-THz frequency ranges, while remaining DC electrically insulating. The unique electromagnetic shielding characteristics of these films are attributed to effective coupling of the electromagnetic waves to the high-aspect-ratio electrically conductive TaSe3 atomic-thread bundles even when the filler concentration is below the electrical percolation threshold. These novel films are promising for high-frequency communication technologies, which require electromagnetic shielding films that are flexible, lightweight, corrosion resistant, inexpensive, and electrically insulating.
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Affiliation(s)
- Zahra Barani
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Fariborz Kargar
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Yassamin Ghafouri
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Subhajit Ghosh
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Konrad Godziszewski
- Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Warsaw, 00-665, Poland
| | - Saba Baraghani
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA
- Materials Science and Engineering Program, University of California, Riverside, Riverside, CA, 92521, USA
| | - Yevhen Yashchyshyn
- Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Warsaw, 00-665, Poland
- CENTERA Laboratories, Institute of High-Pressure Physics, Polish Academy of Sciences, Warsaw, 01-142, Poland
| | - Grzegorz Cywiński
- CENTERA Laboratories, Institute of High-Pressure Physics, Polish Academy of Sciences, Warsaw, 01-142, Poland
- CEZAMAT, Warsaw University of Technology, Warsaw, 02-822, Poland
| | - Sergey Rumyantsev
- CENTERA Laboratories, Institute of High-Pressure Physics, Polish Academy of Sciences, Warsaw, 01-142, Poland
| | - Tina T Salguero
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Alexander A Balandin
- Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA
- Materials Science and Engineering Program, University of California, Riverside, Riverside, CA, 92521, USA
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14
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Ren Z, Cheng L, Hu L, Liu C, Jiang C, Yang S, Ma Z, Zhou C, Wang H, Zhu X, Sun Y, Sheng Z. Photoinduced Broad-band Tunable Terahertz Absorber Based on a VO 2 Thin Film. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48811-48819. [PMID: 32975107 DOI: 10.1021/acsami.0c15297] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The demand for terahertz (THz) communication and detection fuels continuous research for high performance of THz absorption materials. In addition to varying the materials and their structure passively, an alternative approach is to modulate a THz wave actively by tuning an external stimulus. Correlated oxides are ideal materials for this because the effects of a small external control parameter can be amplified by inner electronic correlations. Here, by utilizing an unpatterned strongly correlated electron oxide VO2 thin film, a photoinduced broad-band tunable THz absorber is realized first. The absorption, transmission, reflection, and phase of THz waves can all be actively controlled by an external pump laser above room temperature. By varying the laser fluence, the average broad-band absorption can be tuned from 18.9 to 74.7% and the average transmission can be tuned from 9.2 to 69.2%. Meanwhile, a broad-band antireflection is obtained at 5.6 mJ/cm2, and a π-phase shift of a reflected THz wave is achieved when the fluence increases greater than 5.7 mJ/cm2. Apart from other modulators, the photoexcitation-assisted dual-phase competition is identified as the origin of this active THz multifunctional modulation. Our work suggests that advantages of controllable phase separation in strongly correlated electron systems could provide viable routes in the creation of active optical components for THz waves.
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Affiliation(s)
- Zhuang Ren
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Long Cheng
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Ling Hu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Caixing Liu
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Chengxin Jiang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Shige Yang
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Zongwei Ma
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences, Hefei 230031, China
| | - Chun Zhou
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences, Hefei 230031, China
| | - Haomin Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
| | - Xuebin Zhu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Yuping Sun
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Zhigao Sheng
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences, Hefei 230031, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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15
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Bocharov GS, Eletskii AV. Percolation Conduction of Carbon Nanocomposites. Int J Mol Sci 2020; 21:ijms21207634. [PMID: 33076446 PMCID: PMC7589846 DOI: 10.3390/ijms21207634] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 11/16/2022] Open
Abstract
Carbon nanocomposites present a new class of nanomaterials in which conducting carbon nanoparticles are a small additive to a non-conducting matrix. A typical example of such composites is a polymer matrix doped with carbon nanotubes (CNT). Due to a high aspect ratio of CNTs, inserting rather low quantity of nanotubes (on the level of 0.01%) results in the percolation transition, which causes the enhancement in the conductivity of the material by 10-12 orders of magnitude. Another type of nanocarbon composite is a film produced as a result of reduction of graphene oxide (GO). Such a film is consisted of GO fragments whose conductivity is determined by the degree of reduction. A distinctive peculiarity of both types of nanocomposites relates to the dependence of the conductivity of those materials on the applied voltage. Such a behavior is caused by a non-ideal contact between neighboring carbon nanoparticles incorporated into the composite. The resistance of such a contact depends sharply on the electrical field strength and therefore on the distance between neighboring nanoparticles. Experiments demonstrating non-linear, non-Ohmic behavior of both above-mentioned types of carbon nanocomposites are considered in the present article. There has been a model description presented of such a behavior based on the quasi-classical approach to the problem of electron tunneling through the barrier formed by the electric field. The calculation results correspond qualitatively to the available experimental data.
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Affiliation(s)
- Grigorii S. Bocharov
- Institute of Thermal and Nuclear Power Engineering, National Research University MPEI, 111250 Moscow, Russia;
- Correspondence:
| | - Alexander V. Eletskii
- Institute of Thermal and Nuclear Power Engineering, National Research University MPEI, 111250 Moscow, Russia;
- Joint Institute of High Temperatures RAS, 125412 Moscow, Russia
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Effect of Alumina Nanowires on the Thermal Conductivity and Electrical Performance of Epoxy Composites. Polymers (Basel) 2020; 12:polym12092126. [PMID: 32957648 PMCID: PMC7569916 DOI: 10.3390/polym12092126] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/11/2020] [Accepted: 09/13/2020] [Indexed: 01/19/2023] Open
Abstract
Alumina nanowires (Al2O3-NWs)/epoxy resin composites have been thoroughly studied due to their excellent insulating and dielectric performance. In particular, understanding the effect of nano-alumina with different morphologies on the dielectric performance of composites is of great significance. In this study, Al2O3-NWs with lengths of approximately 100 nm and diameters of approximately 5 nm were prepared and blended with anepoxy resin to form composites, and the effect of the mass fraction of fillers on the thermal conductivity of the composites was investigated. Specifically, the effect of alumina fillers with ananowire structure on the insulating and dielectric performance and breakdown strength of the epoxy composites were analyzed. The influence principle of the interfacial effect and heat accumulation on the dielectric and insulating properties of the composites were described. The results demonstrated that the thermal conductivity of Al2O3-NWs/epoxy resin composites was higher than that of the bare epoxy resin. The thermal conductivity of Al2O3-NWs/epoxy resin composites increased with increasing mass fraction of fillers. When the mass fraction of fillers was 10%, the thermal conductivity of the composite was 134% higher than that of the epoxy resin matrix. The volume resistivity of the composites first increased and then decreased as the mass fraction of fillers increased, while the dielectric constant of the composites increased with increasing mass fraction of fillers and decreasing frequency. The dielectric loss of the composites decreased and then increased as the mass fraction of fillers increased, and it increased with increasing frequency. Additionally, the alternating current breakdown strength of the composites first increased and then decreased withincreasingmass fraction of fillers.
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