Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring Metasurfaces
In this paper, we propose a tunable coordinated multi-band absorber that combines graphene with metal–dielectric–metal structures for the realization of multiple toward perfect absorption. The parametric inversion method is used to extract the equivalent impedance and explain the phenomena of multip...
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doaj-9731663f30bc4e3ab6276bccc8ea74fe2020-11-25T03:18:56ZengMDPI AGNanomaterials2079-49912020-06-01101102110210.3390/nano10061102Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring MetasurfacesZhiyu Bao0Yang Tang1Zheng-Da Hu2Chengliang Zhang3Aliaksei Balmakou4Sergei Khakhomov5Igor Semchenko6Jicheng Wang7School of Science, Jiangnan University, Wuxi 214122, ChinaSchool of Science, Jiangnan University, Wuxi 214122, ChinaSchool of Science, Jiangnan University, Wuxi 214122, ChinaSchool of Science, Jiangnan University, Wuxi 214122, ChinaDepartments of Optics and General Physics, Francisk Skorina Gomel State University, Sovetskaya Str. 104, 246019 Gomel, BelarusDepartments of Optics and General Physics, Francisk Skorina Gomel State University, Sovetskaya Str. 104, 246019 Gomel, BelarusDepartments of Optics and General Physics, Francisk Skorina Gomel State University, Sovetskaya Str. 104, 246019 Gomel, BelarusSchool of Science, Jiangnan University, Wuxi 214122, ChinaIn this paper, we propose a tunable coordinated multi-band absorber that combines graphene with metal–dielectric–metal structures for the realization of multiple toward perfect absorption. The parametric inversion method is used to extract the equivalent impedance and explain the phenomena of multiple-peak absorption. With the change of the Fermi level, equivalent impedances were extracted, and the peculiarities of the individual multiple absorption peaks to change were determined. By changing the structure parameters of gold rings, we obtain either multiple narrow-band absorption peaks or a broadband absorption peak, with the bandwidth of 0.8 μm where the absorptance is near 100%. Therefore, our results provide new insights into the development of tunable multi-band absorbers and broadband absorbers that can be applied to terahertz imaging in high-performance coordinate sensors and other promising optoelectronic devices.https://www.mdpi.com/2079-4991/10/6/1102graphenemetamaterialsparameter inversionperfect absorption |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhiyu Bao Yang Tang Zheng-Da Hu Chengliang Zhang Aliaksei Balmakou Sergei Khakhomov Igor Semchenko Jicheng Wang |
spellingShingle |
Zhiyu Bao Yang Tang Zheng-Da Hu Chengliang Zhang Aliaksei Balmakou Sergei Khakhomov Igor Semchenko Jicheng Wang Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring Metasurfaces Nanomaterials graphene metamaterials parameter inversion perfect absorption |
author_facet |
Zhiyu Bao Yang Tang Zheng-Da Hu Chengliang Zhang Aliaksei Balmakou Sergei Khakhomov Igor Semchenko Jicheng Wang |
author_sort |
Zhiyu Bao |
title |
Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring Metasurfaces |
title_short |
Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring Metasurfaces |
title_full |
Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring Metasurfaces |
title_fullStr |
Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring Metasurfaces |
title_full_unstemmed |
Inversion Method Characterization of Graphene-Based Coordination Absorbers Incorporating Periodically Patterned Metal Ring Metasurfaces |
title_sort |
inversion method characterization of graphene-based coordination absorbers incorporating periodically patterned metal ring metasurfaces |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2020-06-01 |
description |
In this paper, we propose a tunable coordinated multi-band absorber that combines graphene with metal–dielectric–metal structures for the realization of multiple toward perfect absorption. The parametric inversion method is used to extract the equivalent impedance and explain the phenomena of multiple-peak absorption. With the change of the Fermi level, equivalent impedances were extracted, and the peculiarities of the individual multiple absorption peaks to change were determined. By changing the structure parameters of gold rings, we obtain either multiple narrow-band absorption peaks or a broadband absorption peak, with the bandwidth of 0.8 μm where the absorptance is near 100%. Therefore, our results provide new insights into the development of tunable multi-band absorbers and broadband absorbers that can be applied to terahertz imaging in high-performance coordinate sensors and other promising optoelectronic devices. |
topic |
graphene metamaterials parameter inversion perfect absorption |
url |
https://www.mdpi.com/2079-4991/10/6/1102 |
work_keys_str_mv |
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