一种在太赫兹波段具有可切换宽带吸收和透射功能的热控多功能超材料吸收器。

A Thermally Controlled Multifunctional Metamaterial Absorber with Switchable Wideband Absorption and Transmission at THz Band.

作者信息

Wang Liansheng, Fu Quanhong, Wen Fusan, Zhou Xia, Ding Xueyong, Wang Yuan

机构信息

Science and Technology Department, Sanya University, Sanya 572022, China.

Science Department, Northwestern Polytechnical University, Xi'an 710072, China.

出版信息

Materials (Basel). 2023 Jan 15;16(2):846. doi: 10.3390/ma16020846.

DOI:10.3390/ma16020846

PMID:36676582

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9866849/

Abstract

This paper proposes a thermally controlled multifunctional metamaterial absorber with switchable wideband absorption and transmission at the THz band based on resistive film and vanadium dioxide (VO). The function of the absorber can be adjusted by changing the phase transition characteristics of VO. When VO is in a metallic state, the absorber can achieve wideband absorption with above 90% absorption from 3.31 THz to 10 THz and exhibits excellent absorption performance under a wide range of incident and polarization angles. When VO is in an insulating state, the metamaterial acts in transmission mode with a transmission coefficient of up to 61% at 5.15 THz. The transmission region is inside the absorption band, which is very important for practical applications. It has the advantages of having a simple structure, wideband absorption, and switchable absorption/transmission with potential application value in the fields of stealth of communication equipment and radar at the THz band.

摘要

本文提出了一种基于电阻膜和二氧化钒（VO₂）的热控多功能超材料吸收器，其在太赫兹频段具有可切换的宽带吸收和传输功能。吸收器的功能可通过改变VO₂的相变特性来调节。当VO₂处于金属态时，吸收器可实现宽带吸收，在3.31太赫兹至10太赫兹范围内吸收率高于90%，并且在宽范围的入射和偏振角度下都表现出优异的吸收性能。当VO₂处于绝缘态时，超材料以传输模式工作，在5.15太赫兹处传输系数高达61%。传输区域位于吸收带内，这对实际应用非常重要。它具有结构简单、宽带吸收以及吸收/传输可切换的优点，在太赫兹频段的通信设备和雷达隐身等领域具有潜在的应用价值。