基于周期结构的电磁辐射控制材料研究  

Study of Electromagnetic Radiation Control Materials Based on Periodic Structure

作　　者：周佩珩[1] 陈万里 张林博[1] 张楠[1] 张辉彬[1] 谢建良[1] 邓龙江[1] ZHOU Peiheng CHEN Wanli ZHANG Linbo ZHANG Nan ZHANG Huibin XIE Jianliang DENG Longjiang(National Engineering Research Center of Electromagnetic Radiation Control Materials, State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China)

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室国家电磁辐射控制材料工程技术研究中心,四川成都610054

出　　处：《中国材料进展》2017年第9期667-675,共9页Materials China

基　　金：国家自然科学基金资助项目(51025208;61471097);教育部创新团队项目(IRT13009)

摘　　要：电磁辐射控制材料可以对电磁波传导、吸收和反射特性进行调控,成为一类不可或缺的电子信息材料。周期结构灵活的设计和独特的性能为电磁波辐射控制带来了新的发展,但其强电磁谐振必然导致"窄带"问题。主要介绍了基于周期结构的几种电磁波辐射控制材料,通过结合介质特性的多谐振耦合技术实现了宽带/高性能设计。电磁谐振结构间的耦合,突破了非对称开口谐振环(SRR)的极化/入射角敏感性;提出了基于等效电磁参数的谐振关系,形成了场束缚/图形耦合等周期结构设计/加载技术,使得传统磁性吸波体-10 d B反射带宽增加65%且低频吸收率提高了接近3倍;解决了极化转换周期结构的宽带/高效问题,设计的传输型极化转换器具有带通滤波/交叉极化/非对称传输3种功能。基于介质叠加的红外宽带吸波结构具有热辐射调控功能,形成了红外辐射控制的新思路。As one of the essential electronic information materials, electromagnetic radiation control material manipulates the transmission, absorption and reflection of propagating electromagnetic wave. Due to the flexible design and unique properties, periodic structure has brought new development to electromagnetic radiation control technique, but its character of strong elec- trical/magnetic resonance also causes the narrow-band problem. In this work, several kinds of electromagnetic radiation control materials based on periodic structure are introduced to realize broadband and high efficiency design by multi-resonance cou- pling. The coupling between electrical/magnetic resonant components breaks the polarization and incident angel dependence of absorption in asymmetric periodic structure; the resonance condition based on effective electromagnetic parameters is proposed to support the design and loading method of periodic structures, e.g. field confinement and pattern coupling, and the -10 dB reflection bandwidth has been increased by 65% while the low-frequency absorption has been increased by almost 3 times; the broadband and high-efficiency problem of periodic structure based polarization convector has been solved, while the proposed polarization convector of transmitting type has three functions as band-pass filtering, cross-polarization, and asymmetric trans- mission. Based on the dielectric layer stacking method, broadband infrared absorbers are proposed with the ability of thermal radiation control, which inspires the new technique for infrared radiation manipulation.

关 键 词：电磁辐射控制 周期结构 吸波 极化转换 红外辐射 

分 类 号：TN34[电子电信—物理电子学]