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Wang MQ, Shu JC, Wan X, Cao WQ, Cao MS. Thermally Derived Hierarchical Nanoplates for Electromagnetic Protection and Waste Energy Recovery Device. Small 2023; 19:e2303186. [PMID: 37365955 DOI: 10.1002/smll.202303186] [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: 04/15/2023] [Revised: 06/13/2023] [Indexed: 06/28/2023]
Abstract
With the advent of intelligent society and the popularity of electronic equipment, the protection and treatment of electromagnetic (EM) radiation have become hot research topics all over the world. Herein, novel 2D carbon-based nanoplates with uniformly embedded Co nanoparticles are prepared, with unique hierarchical structure and integrated magnetic-dielectric components. The obtained hierarchical nanoplates exhibit a wide range of tunable EM properties (ε' for 3.38 to 34.67 and ε″ for 0.13 to 31.45) by manipulating the dispersed states inside wax system, which can achieve an effective switch from microwave absorption to EM interference shielding performance. The optimal reflection loss reaches -55.6 dB, and the shielding efficiency is 93.5%. Meanwhile, the hierarchical nanoplates also exhibit impressive capacitive performance, with a specific capacitance of 1654 F g-1 at 1 A g-1 . Based on this, a creative device is constructed with the nanoplates, which can convert harmful EM radiation to useful electric energy for recycling. This work offers a new idea for the development of EM materials and functional devices, powerfully promoting the advance of energy and environmental fields.
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Affiliation(s)
- Meng-Qi Wang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Jin-Cheng Shu
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Xiao Wan
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Wen-Qiang Cao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Mao-Sheng Cao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
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Wu Z, Liu P, Lin M, Zha S, Ni X. A Microwave Field-Induced Nonlinear Metamaterial with Wafer Integration Level. ACS Appl Mater Interfaces 2023; 15:16189-16197. [PMID: 36921290 DOI: 10.1021/acsami.2c21964] [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: 06/18/2023]
Abstract
Field-induced nonlinear materials, with extended abilities of manipulating electromagnetic waves, have been widely employed in electromagnetic protection, absorption, and detection. Until now, it was found that the field-induced nonlinearity mainly shows in the optical and terahertz frequency bands. Applying the microwave band into such technical activities is hampered due to a lack of investigations on the nonlinearity caused by microwave electric fields, especially in the ultrawideband and microwave high-frequency bands. In this paper, a nonlinear metamaterial (NLMM) concept based on the integration of metamaterial structures and a semiconductor on the same wafer is proposed, which shows nonlinear behavior to the electromagnetics' field energy in the microwave band. The designed NLMM is transparent to low-density electromagnetic radiation fields, while it adaptively becomes opaque to high-density electromagnetic radiation fields. Two types of NLMM are designed to verify the nonlinear characteristics of ultrawide and narrow bands in the microwave band, respectively. The concept of NLMM can be used for the application of the microwave frequency band in electromagnetic protection and detection.
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Affiliation(s)
- Zhaofeng Wu
- College of Electronic Science, National University of Defense Technology, Changsha 410073, China
| | - Peiguo Liu
- College of Electronic Science, National University of Defense Technology, Changsha 410073, China
| | - Mingtuan Lin
- College of Electronic Science, National University of Defense Technology, Changsha 410073, China
| | - Song Zha
- College of Electronic Science, National University of Defense Technology, Changsha 410073, China
| | - Xiaocheng Ni
- College of Electronic Science, National University of Defense Technology, Changsha 410073, China
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Song R, Mao B, Wang Z, Hui Y, Zhang N, Fang R, Zhang J, Wu Y, Ge Q, Novoselov KS, He D. Comparison of copper and graphene-assembled films in 5G wireless communication and THz electromagnetic-interference shielding. Proc Natl Acad Sci U S A 2023; 120:e2209807120. [PMID: 36812210 PMCID: PMC9992768 DOI: 10.1073/pnas.2209807120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 12/28/2022] [Indexed: 02/24/2023] Open
Abstract
Since first developed, the conducting materials in wireless communication and electromagnetic interference (EMI) shielding devices have been primarily made of metal-based structures. Here, we present a graphene-assembled film (GAF) that can be used to replace copper in such practical electronics. The GAF-based antennas present strong anticorrosive behavior. The GAF ultra-wideband antenna covers the frequency range of 3.7 GHz to 67 GHz with the bandwidth (BW) of 63.3 GHz, which exceed ~110% than the copper foil-based antenna. The GAF Fifth Generation (5G) antenna array features a wider BW and lower sidelobe level compared with that of copper antennas. EMI shielding effectiveness (SE) of GAF also outperforms copper, reaching up to 127 dB in the frequency range of 2.6 GHz to 0.32 THz, with a SE per unit thickness of 6,966 dB/mm. We also confirm that GAF metamaterials exhibit promising frequency selection characteristics and angular stability as flexible frequency selective surfaces.
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Affiliation(s)
- Rongguo Song
- Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan430070, China
| | - Boyang Mao
- National Graphene Institute, University of Manchester, ManchesterM13 9PL, UK
- Chongqing Two-Dimensional (2D) Materials Institute, Chongqing400714, China
| | - Zhe Wang
- Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan430070, China
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan430070, China
| | - Yueyue Hui
- Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan430070, China
| | - Ning Zhang
- Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan430070, China
| | - Ran Fang
- Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan430070, China
| | - Jingwei Zhang
- Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan430070, China
| | - Yuen Wu
- School of Chemistry and Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), the Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei National Laboratory for Physical Sciences at the Microscale, Hefei230026, China
| | - Qi Ge
- Chongqing Two-Dimensional (2D) Materials Institute, Chongqing400714, China
| | - Kostya S. Novoselov
- National Graphene Institute, University of Manchester, ManchesterM13 9PL, UK
- Chongqing Two-Dimensional (2D) Materials Institute, Chongqing400714, China
- Department of Materials Science and Engineering, National University of Singapore, Singapore117575, Singapore
- Centre for Advanced Two-Dimensional (2D) Materials, National University of Singapore, Singapore117546, Singapore
| | - Daping He
- Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan430070, China
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan430070, China
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