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Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design

A conformal metamaterial absorber with simultaneous optical transparency and broadband absorption is proposed in this paper. The absorptance above 90% over a wide frequency range of 5.3–15 GHz can be achieved through topology optimization combined with a genetic algorithm (GA). The broadband absorpt...

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Autores principales: Min, Pingping, Song, Zicheng, Yang, Lei, Ralchenko, Victor G., Zhu, Jiaqi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622633/
https://www.ncbi.nlm.nih.gov/pubmed/34832829
http://dx.doi.org/10.3390/mi12111419
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author Min, Pingping
Song, Zicheng
Yang, Lei
Ralchenko, Victor G.
Zhu, Jiaqi
author_facet Min, Pingping
Song, Zicheng
Yang, Lei
Ralchenko, Victor G.
Zhu, Jiaqi
author_sort Min, Pingping
collection PubMed
description A conformal metamaterial absorber with simultaneous optical transparency and broadband absorption is proposed in this paper. The absorptance above 90% over a wide frequency range of 5.3–15 GHz can be achieved through topology optimization combined with a genetic algorithm (GA). The broadband absorption can be kept at incident angles within 45° and 70° for TE mode and TM mode, respectively. In the meantime, by employing transparent substrates, including polyvinyl chloride (PVC) and polyethylene terephthalate (PET), good optical transmittance and flexibility can be obtained simultaneously. The experimental results agree well with the numerical simulations, which further validates the reliability of our design and theoretical analysis. With its visible-wavelength transparency, flexibility, broadband absorption, low profile, excellent angle stability and polarization insensitivity, the proposed absorber is highly favored for practical applications in microwave engineering, such as electromagnetic interference and stealth technology. Moreover, the proposed design method of topology optimization can be extended to design the absorber quickly and efficiently, according to specific engineering requirements.
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spelling pubmed-86226332021-11-27 Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design Min, Pingping Song, Zicheng Yang, Lei Ralchenko, Victor G. Zhu, Jiaqi Micromachines (Basel) Communication A conformal metamaterial absorber with simultaneous optical transparency and broadband absorption is proposed in this paper. The absorptance above 90% over a wide frequency range of 5.3–15 GHz can be achieved through topology optimization combined with a genetic algorithm (GA). The broadband absorption can be kept at incident angles within 45° and 70° for TE mode and TM mode, respectively. In the meantime, by employing transparent substrates, including polyvinyl chloride (PVC) and polyethylene terephthalate (PET), good optical transmittance and flexibility can be obtained simultaneously. The experimental results agree well with the numerical simulations, which further validates the reliability of our design and theoretical analysis. With its visible-wavelength transparency, flexibility, broadband absorption, low profile, excellent angle stability and polarization insensitivity, the proposed absorber is highly favored for practical applications in microwave engineering, such as electromagnetic interference and stealth technology. Moreover, the proposed design method of topology optimization can be extended to design the absorber quickly and efficiently, according to specific engineering requirements. MDPI 2021-11-18 /pmc/articles/PMC8622633/ /pubmed/34832829 http://dx.doi.org/10.3390/mi12111419 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Min, Pingping
Song, Zicheng
Yang, Lei
Ralchenko, Victor G.
Zhu, Jiaqi
Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design
title Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design
title_full Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design
title_fullStr Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design
title_full_unstemmed Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design
title_short Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design
title_sort optically transparent flexible broadband metamaterial absorber based on topology optimization design
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622633/
https://www.ncbi.nlm.nih.gov/pubmed/34832829
http://dx.doi.org/10.3390/mi12111419
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