학술논문
周期结构电磁超材料吸波体的设计及最新进展 / Design and Recent Progress of Periodically Structured Electromagnetic Metamaterial Absorbers
Document Type
Academic Journal
Author
Source
材料导报 / Materials Reports. 38(3):31-41
Subject
Language
Chinese
ISSN
1005-023X
Abstract
电磁吸波性能始终是军事活动重点关注的研究方向.传统吸波材料不能满足日益增长的综合需求,因此,以人工制备、由亚波长结构单元组合且具有超常物理性质的超材料为基础,经导电单元图案及整体结构设计构成的超材料吸波体,在近些年得到广泛研究和发展.本文综述了周期结构电磁超材料吸波体的发展趋势,凝练其吸波机制,并总结出超材料吸波体的基本结构,包括导电单元层、介质层和反射层.同时参考近年来超材料吸波体的研究成果,以单层结构、多层结构和柔性结构超材料吸波体为对象,详细分析影响超材料吸波体吸波性能的关键因素,归纳总结各类型超材料吸波体的结构设计、材料组分、吸波性能等.此外,针对现有研究成果,探讨周期结构电磁超材料吸波体目前存在的不足之处,指出还需重点关注和研究的问题,以期为后续研究提供方向和思路.
Electromagnetic absorbing performance has always been the focus of military activities.Since traditional wave absorbing materials cannot meet the growing comprehensive demand,metamaterial absorbers,which are subwavelength structural units with supernormal physical properties,have been widely studied and developed in recent years by artificially designing conductive units and overall structures.In this paper,the development trend and absorbing mechanism of periodic structure of metamaterial absorbers are reviewed,and the basic structure of metama-terial absorbers is summarized,including conductive element layer,medium layer and reflective layer.At the same time,by referring to the re-search results of metamaterial absorbers in recent years,the key factors affecting the performance of metamaterial absorbers with single-layer structure,multi-layer structure and flexible structure are analyzed in detail,and the structural design,material composition and wave absorbing properties of each type are summarized.In addition,according to the existing research results,the shortcomings of periodic electromagnetic ma-terial wave absorbers are discussed,and the problems that need to be focused on and studied are pointed out,in order to provide the direction and ideas for the follow-up research.
Electromagnetic absorbing performance has always been the focus of military activities.Since traditional wave absorbing materials cannot meet the growing comprehensive demand,metamaterial absorbers,which are subwavelength structural units with supernormal physical properties,have been widely studied and developed in recent years by artificially designing conductive units and overall structures.In this paper,the development trend and absorbing mechanism of periodic structure of metamaterial absorbers are reviewed,and the basic structure of metama-terial absorbers is summarized,including conductive element layer,medium layer and reflective layer.At the same time,by referring to the re-search results of metamaterial absorbers in recent years,the key factors affecting the performance of metamaterial absorbers with single-layer structure,multi-layer structure and flexible structure are analyzed in detail,and the structural design,material composition and wave absorbing properties of each type are summarized.In addition,according to the existing research results,the shortcomings of periodic electromagnetic ma-terial wave absorbers are discussed,and the problems that need to be focused on and studied are pointed out,in order to provide the direction and ideas for the follow-up research.