Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials

This paper reports an independently tunable graphene-based metamaterial absorber (GMA) designed by etching two cascaded resonators with dissimilar sizes in the unit cell. Two perfect absorption peaks were obtained at 6.94 and 10.68 μm with simple single-layer metal-graphene metamaterials; the peaks...

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Main Authors: Chen Han, Renbin Zhong, Zekun Liang, Long Yang, Zheng Fang, Yiqing Wang, Anchen Ma, Zhenhua Wu, Min Hu, Diwei Liu, Shenggang Liu
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/14/2/284
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author Chen Han
Renbin Zhong
Zekun Liang
Long Yang
Zheng Fang
Yiqing Wang
Anchen Ma
Zhenhua Wu
Min Hu
Diwei Liu
Shenggang Liu
author_facet Chen Han
Renbin Zhong
Zekun Liang
Long Yang
Zheng Fang
Yiqing Wang
Anchen Ma
Zhenhua Wu
Min Hu
Diwei Liu
Shenggang Liu
author_sort Chen Han
collection DOAJ
description This paper reports an independently tunable graphene-based metamaterial absorber (GMA) designed by etching two cascaded resonators with dissimilar sizes in the unit cell. Two perfect absorption peaks were obtained at 6.94 and 10.68 μm with simple single-layer metal-graphene metamaterials; the peaks show absorption values higher than 99%. The mechanism of absorption was analyzed theoretically. The independent tunability of the metamaterial absorber (MA) was realized by varying the Fermi level of graphene under a set of resonators. Furthermore, multi-band and wide-band absorption were observed by the proposed structure upon increasing the number of resonators and resizing them in the unit cell. The obtained results demonstrate the multipurpose performance of this type of absorber and indicate its potential application in diverse applications, such as solar energy harvesting and thermal absorbing.
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spelling doaj.art-c7ae488c95ca4b54bc11d88ca2e719db2023-12-03T12:25:36ZengMDPI AGMaterials1996-19442021-01-0114228410.3390/ma14020284Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene MetamaterialsChen Han0Renbin Zhong1Zekun Liang2Long Yang3Zheng Fang4Yiqing Wang5Anchen Ma6Zhenhua Wu7Min Hu8Diwei Liu9Shenggang Liu10Terahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaTerahertz Research Centre, School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThis paper reports an independently tunable graphene-based metamaterial absorber (GMA) designed by etching two cascaded resonators with dissimilar sizes in the unit cell. Two perfect absorption peaks were obtained at 6.94 and 10.68 μm with simple single-layer metal-graphene metamaterials; the peaks show absorption values higher than 99%. The mechanism of absorption was analyzed theoretically. The independent tunability of the metamaterial absorber (MA) was realized by varying the Fermi level of graphene under a set of resonators. Furthermore, multi-band and wide-band absorption were observed by the proposed structure upon increasing the number of resonators and resizing them in the unit cell. The obtained results demonstrate the multipurpose performance of this type of absorber and indicate its potential application in diverse applications, such as solar energy harvesting and thermal absorbing.https://www.mdpi.com/1996-1944/14/2/284independently tunablegraphenemetamaterial absorbersingle layer
spellingShingle Chen Han
Renbin Zhong
Zekun Liang
Long Yang
Zheng Fang
Yiqing Wang
Anchen Ma
Zhenhua Wu
Min Hu
Diwei Liu
Shenggang Liu
Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials
Materials
independently tunable
graphene
metamaterial absorber
single layer
title Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials
title_full Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials
title_fullStr Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials
title_full_unstemmed Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials
title_short Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials
title_sort independently tunable multipurpose absorber with single layer of metal graphene metamaterials
topic independently tunable
graphene
metamaterial absorber
single layer
url https://www.mdpi.com/1996-1944/14/2/284
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