Design and analysis of graphene-based THz absorber using multi-layer structure based on increasing profile for conductivity of the graphene layers

被引：5

作者：

Badr, Nasrin Shoghi ^{[1
]}

Moradi, Gholamreza ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Dept Elect Engn, Wave Propagat & Microwave Measurement Res Lab, Tehran 15914, Iran

来源：

OPTIK | 2019年 / 198卷

关键词：

Graphene absorber; Graphene ribbons; Terahertz; Circuit model; TERAHERTZ; PLASMONICS;

D O I：

10.1016/j.ijleo.2019.163239

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, the equivalent circuit model is used to explain the design process of a graphene absorber, which aims to achieve high absorption through the impedance matching of the structure with free space impedance. In the proposed structure, the dielectric layers and periodic graphene ribbons are used that are placed on a good conducive surface. The proposed model has a multi-layered structure and the graphene conductivity rises from bottom to top. In this work, the equivalent circuit model is presented and the design process is described, then several structures with different layers (at different frequencies) are studied, designed and simulated. Based on the proposed structure, can be achieved to a high 90% absorption at the central frequency.

引用

页数：5