Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity
This paper proposes a square ring-shaped triple-band perfect absorber based on graphene with silicon as the substrate, gold as the reflector and a thin dielectric layer of silicon dioxide. After simulation by the FDTD method, the numerical results show that the absorption spectrum based on the perio...
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doaj-d360d7aec5064a6da42ca53713f670812021-04-12T04:23:25ZengElsevierResults in Physics2211-37972021-04-0123104037Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivityMiao Pan0Huazhu Huang1Baodian Fan2Wenzhi Chen3Shuai Li4Qinglai Xie5Feng Xu6Dongwei Wei7Jun Fang8College of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, ChinaCollege of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, ChinaCollege of Electronics and Information Science, Fujian Jiangxia University, Fuzhou 350108, ChinaCollege of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, ChinaCollege of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, ChinaCollege of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, ChinaCollege of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China; Corresponding author.College of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, ChinaCollege of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, ChinaThis paper proposes a square ring-shaped triple-band perfect absorber based on graphene with silicon as the substrate, gold as the reflector and a thin dielectric layer of silicon dioxide. After simulation by the FDTD method, the numerical results show that the absorption spectrum based on the periodic array structure of graphene exhibits three perfect absorption peaks in the terahertz band, corresponding to 25.53 μm, 36.44 μm and 53.44 μm, respectively, and they all reach 99% absorption rate. By changing the gate voltage, the material parameters of graphene can be easily adjusted, so as to achieve dynamic control of the absorption characteristics of the absorber. Due to the high symmetry of the structure, it has a good angular polarization tolerance in the far infrared band. In addition, the obvious spectral shift caused by the change of surrounding environment refractive index and the values of sensitivity (S) and figure of merit (FOM) are all indicates that our absorber has certain application prospects in the field of sensing. Furthermore, our absorber has shown great application potential in light detection in infrared and terahertz band as a consequence of the strong tunability.http://www.sciencedirect.com/science/article/pii/S2211379721002035Perfect metamaterial absorberTriple-bandGrapheneFDTD method |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Miao Pan Huazhu Huang Baodian Fan Wenzhi Chen Shuai Li Qinglai Xie Feng Xu Dongwei Wei Jun Fang |
spellingShingle |
Miao Pan Huazhu Huang Baodian Fan Wenzhi Chen Shuai Li Qinglai Xie Feng Xu Dongwei Wei Jun Fang Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity Results in Physics Perfect metamaterial absorber Triple-band Graphene FDTD method |
author_facet |
Miao Pan Huazhu Huang Baodian Fan Wenzhi Chen Shuai Li Qinglai Xie Feng Xu Dongwei Wei Jun Fang |
author_sort |
Miao Pan |
title |
Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity |
title_short |
Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity |
title_full |
Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity |
title_fullStr |
Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity |
title_full_unstemmed |
Theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity |
title_sort |
theoretical design of a triple-band perfect metamaterial absorber based on graphene with wide-angle insensitivity |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2021-04-01 |
description |
This paper proposes a square ring-shaped triple-band perfect absorber based on graphene with silicon as the substrate, gold as the reflector and a thin dielectric layer of silicon dioxide. After simulation by the FDTD method, the numerical results show that the absorption spectrum based on the periodic array structure of graphene exhibits three perfect absorption peaks in the terahertz band, corresponding to 25.53 μm, 36.44 μm and 53.44 μm, respectively, and they all reach 99% absorption rate. By changing the gate voltage, the material parameters of graphene can be easily adjusted, so as to achieve dynamic control of the absorption characteristics of the absorber. Due to the high symmetry of the structure, it has a good angular polarization tolerance in the far infrared band. In addition, the obvious spectral shift caused by the change of surrounding environment refractive index and the values of sensitivity (S) and figure of merit (FOM) are all indicates that our absorber has certain application prospects in the field of sensing. Furthermore, our absorber has shown great application potential in light detection in infrared and terahertz band as a consequence of the strong tunability. |
topic |
Perfect metamaterial absorber Triple-band Graphene FDTD method |
url |
http://www.sciencedirect.com/science/article/pii/S2211379721002035 |
work_keys_str_mv |
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