An electrically switchable wideband metamaterial absorber based on graphene at P band

Graphene has the capability of dynamically tuning its conductivity through gate voltage. Based on this fact, an electrically switchable wideband metamaterial absorber at low frequencies is presented and investigated in this paper. Our calculated results show that its absorption is over 90% from 400...

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Autores principales:	Wang Liansheng, Xia Dongyan, Fu Quanhong, Ding Xueyong, Wang Yuan
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	metamaterial absorber graphene switchable wideband low frequency Physics QC1-999
Acceso en línea:	https://doaj.org/article/df1db8f823494b4c9113ed984cff8833
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spelling	oai:doaj.org-article:df1db8f823494b4c9113ed984cff88332021-12-05T14:11:02ZAn electrically switchable wideband metamaterial absorber based on graphene at P band2391-547110.1515/phys-2021-0056https://doaj.org/article/df1db8f823494b4c9113ed984cff88332021-08-01T00:00:00Zhttps://doi.org/10.1515/phys-2021-0056https://doaj.org/toc/2391-5471Graphene has the capability of dynamically tuning its conductivity through gate voltage. Based on this fact, an electrically switchable wideband metamaterial absorber at low frequencies is presented and investigated in this paper. Our calculated results show that its absorption is over 90% from 400 to 1,000 MHz with the Fermi level of graphene being at 0 eV and the absorption band can be switched by adjusting the Fermi level of graphene without changing its physical structure. Moreover, the surface current distribution enables us to reveal the switchable wideband absorption characteristics of our designed metamaterial absorber. At last, we prove that its absorption property is polarization-insensitive due to the rotational symmetry of the structural unit. This work may provide a further step in the development of switchable sensors and absorbers at low frequencies.Wang LianshengXia DongyanFu QuanhongDing XueyongWang YuanDe Gruyterarticlemetamaterial absorbergrapheneswitchablewidebandlow frequencyPhysicsQC1-999ENOpen Physics, Vol 19, Iss 1, Pp 460-466 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	metamaterial absorber graphene switchable wideband low frequency Physics QC1-999
spellingShingle	metamaterial absorber graphene switchable wideband low frequency Physics QC1-999 Wang Liansheng Xia Dongyan Fu Quanhong Ding Xueyong Wang Yuan An electrically switchable wideband metamaterial absorber based on graphene at P band
description	Graphene has the capability of dynamically tuning its conductivity through gate voltage. Based on this fact, an electrically switchable wideband metamaterial absorber at low frequencies is presented and investigated in this paper. Our calculated results show that its absorption is over 90% from 400 to 1,000 MHz with the Fermi level of graphene being at 0 eV and the absorption band can be switched by adjusting the Fermi level of graphene without changing its physical structure. Moreover, the surface current distribution enables us to reveal the switchable wideband absorption characteristics of our designed metamaterial absorber. At last, we prove that its absorption property is polarization-insensitive due to the rotational symmetry of the structural unit. This work may provide a further step in the development of switchable sensors and absorbers at low frequencies.
format	article
author	Wang Liansheng Xia Dongyan Fu Quanhong Ding Xueyong Wang Yuan
author_facet	Wang Liansheng Xia Dongyan Fu Quanhong Ding Xueyong Wang Yuan
author_sort	Wang Liansheng
title	An electrically switchable wideband metamaterial absorber based on graphene at P band
title_short	An electrically switchable wideband metamaterial absorber based on graphene at P band
title_full	An electrically switchable wideband metamaterial absorber based on graphene at P band
title_fullStr	An electrically switchable wideband metamaterial absorber based on graphene at P band
title_full_unstemmed	An electrically switchable wideband metamaterial absorber based on graphene at P band
title_sort	electrically switchable wideband metamaterial absorber based on graphene at p band
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/df1db8f823494b4c9113ed984cff8833
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An electrically switchable wideband metamaterial absorber based on graphene at P band

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