基于相变材料超表面的多功能切换研究进展  

Research Progress for Multifunctional Switching Based on Phase Change Material Metasurfaces

作　　者：韩卓轩 胡莎 顾长志[2] 樊志琴[1] HAN Zhuoxuan;HU Sha;GU Changzhi;FAN Zhiqin(Faculty of Science,Henan University of Technology,Zhengzhou 450001,China;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]河南工业大学理学院,郑州450001 [2]北京凝聚态物理国家研究中心、中国科学院物理研究所,北京100190

出　　处：《真空科学与技术学报》2024年第5期377-387,共11页Chinese Journal of Vacuum Science and Technology

摘　　要：超表面是一种由亚波长单元结构组成的人工材料,可实现对电磁波的振幅、偏振、相位、传播模式等属性的灵活、有效调控,因此近年来备受关注。但大多数超表面的功能是静态的,无法实现对电磁波的动态调控。相对于静态超表面,可重构超表面可在不改变超表面结构设计的前提下,通过不同的外部激励,实现光学功能的主动切换。文章综述了基于相变材料的可重构超表面在多功能切换方面的研究进展,分别从相变材料作为超表面的单元结构、薄膜、嵌入结构间隙以及可编程这四种超表面构型,详细介绍了多功能切换超表面的设计原理及应用,最后总结并且展望了相变材料超表面未来的发展方向和应用前景。Metasurfaces,artificially engineered with periodic subwavelength meta-atoms,can flexibly and effectively manipulate the inherent properties of electromagnetic waves,such as amplitude,polarization,phase and propagation mode.Thus,metasurfaces have attracted great attention in recent years.However,the optical functions of most metasurfaces are static,which cannot realize the dynamic control of electromagnetic waves.Compared with static metasurfaces,reconfigurable metasurfaces can realize the active switching of optical functions by introducing different external excitations without changing the metasurface design.In this paper,we present a few research achievements to review the research progress of phase change material metasurfaces in multifunctional switching.The design principles and applications of multifunctional switching metasurfaces are introduced in detail from four configurations,in which the GST material operates as the unit cell,film,embedded gap and programmable structure.Finally,the future direction and applications of phase change material metasurfaces are presented.

关 键 词：超表面 相变材料 动态调控 多功能切换 

分 类 号：O436.2[机械工程—光学工程]