Surface Impedance of Metasurfaces/Graphene Hybrid Structures

Nanoscale Research Letters

Yuan-Hong Zhong¹  Han Xiong¹  Xiao-Heng Tan¹  Ming-Chun Tang¹  Yue-Hong Peng² 

[1] School of Microelectronics and Communication Engineering, Chongqing University;School of Physics and Electronic Science, Chuxiong Normal University;

关键词: Surface impedance;    Metasurface;    Graphene;   

DOI  :  10.1186/s11671-019-2995-x

来源: DOAJ

【 摘 要 】

Abstract Understanding and manipulation of surface impedance in graphene hybrid structure is a significant issue for applications of graphene-based optoelectronics devices. In order to achieve this purpose in the terahertz region, analytical expressions for the impedances of metasurface were derived, which allows us to easily understand the relationship between physical dimensions and impedance. Simulation results show an excellent agreement with the analytical predictions. In addition, we focus on the synthetic impedance when square patch and graphene sheet joined together, discuss the influence of the size of metasurface as well as chemical potentiality as for graphene on the synthetic impedance. Based on these results, a number of absorbers as well as optical devices can be designed that utilize impedance metasurfaces.

【 授权许可】

Unknown