Implementing the Dual Functions of Switchable Broadband Absorption and Sensitive Sensing in a VO2-Based Metasurface

被引：0

作者：

Songliang Zhao

Jingyu Wang

Huan Jiang

Hui Zhang

Weiren Zhao

机构：

[1] Guangdong University of Technology,School of Physics and Optoelectronic Engineering

[2] Guangdong University of Technology,Guangdong Provincial Key Laboratory of Information Photonics Technology

来源：

Plasmonics | 2023年 / 18卷

关键词：

Terahertz; Metasurface; Phase change materials; Dual functions; Dynamic control;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The metadevice with multiple functions in a fixed nanostructure is highly required. In this paper, we numerically achieved the dual functions of switchable broadband absorption and sensitive refractive index (RI) sensing in a fixed fishnet-shaped nanostructure by integrating with the phase change material vanadium dioxide (VO2). Exploiting the insulator-to-metal transition of VO2, the absorption strength could be dynamically switched from 0.07 to 0.97 in a broad terahertz (THz) band. Meanwhile, the same structure with metallic VO2 exhibits highly sensitive RI sensing performance. The sensitivity reaches 1.15 THz/RIU, which makes great progress. The proposed metasurface with dual functions will promote the development and applications of THz nanodevices.

引用

页码：2041 / 2047

页数：6