吸透一体超材料研究进展  

Research Progress in Integrated Metamaterial with Functionalities of Absorption and Transmission

作　　者：宋友婷 黄聪颖 封哲宇 时胜圆 李敏华[1] 董建峰[1] SONG Youting;HUANG Congying;FENG Zheyu;SHI Shengyuan;LI Minhua;DONG Jianfeng(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,Zhejiang,China;Department of Basic Education,Ningbo Technical College,Ningbo 315032,Zhejiang,China)

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]宁波技师学院基础部,浙江宁波315032

出　　处：《材料导报》2022年第11期38-46,共9页Materials Reports

基　　金：国家自然科学基金(62175119,61871242);宁波大学王宽诚幸福基金。

摘　　要：不同于传统吸波材料或透波材料,吸透一体材料可同时具备带内透波和带外吸波的特性,在降低目标雷达散射截面和抑制电磁干扰中具有重要的意义。传统纳米材料或陶瓷材料很难同时实现这两个复合功能,且缺乏谐振频率的调控方法。随着超材料的飞速发展,基于人工电磁微结构实现吸透一体的新型复合材料,又称rasorber,近些年成为了研究热点。由于在设计中,既要考虑带内透明,又要兼顾带外吸收,rasorber仍然存在透波品质因子Q值低、吸波带宽窄、频率可调性差等缺点。本文根据吸收带与通带的相对位置,介绍了低频侧吸收(A-T)、高频侧吸收(T-A)、单通带双侧吸收(A-T-A)以及双通带(T-A-T)四种吸透超材料,对比分析了各种模型的谐振原理、存在的问题以及未来发展方向。这种吸透一体化超材料的设计开辟了通信与隐身一体化研究的新思路,其与新型功能材料(如半导体材料、超导材料、相变材料、液晶材料等)相结合,具有极大的实际应用价值。Unlike traditional wave-absorbing and wave-transparent materials, integrated materials with functionalities of absorption and transmission exhibit in-band transmission and out-band absorption properties. These properties are important in reducing the target radar cross-section and suppressing electromagnetic interference. Traditional nanomaterials or ceramic materials cannot simultaneously achieve these two composite functions. They also lack the methods required for controlling the resonant frequency. With the rapid development of metamaterials, a new type of composite material with artificial electromagnetic microstructures to achieve absorption and transmission, also known as rasorber, has become a research hotspot in the recent years. However, because both in-band transparency and out-of-band absorption must be considered in their design, rasorbers exhibit some shortcomings, such as low Q value of transmission, narrow absorption bandwidth and poor frequency adjustability. In this paper, we introduce four kinds of rasorbers according to the relative locations of the transmission and absorption bands: absorption band below the transmission band(A-T), absorption band above the transmission band(T-A), transmission band between two absorption bands(A-T-A) and dual transmission bands(T-A-T). We also analyze and compare the resonant principles, remaining problems and future development directions of these rasorbers. Metamaterials with functionalities of absorption and transmission open up new possibilities for integrated communication and stealth. They present great application value when combined with other new functional materials, such as semiconductor materials, superconducting materials, phase change materials and liquid crystal materials.

关 键 词：超材料 吸透一体 吸波材料 透波材料 rasorber 

分 类 号：TB34[一般工业技术—材料科学与工程]