液晶与显示2025，Vol.40Issue(3)：407-423,17.DOI:10.37188/CJLCD.2024-0320
可调谐太赫兹液晶超表面
Overview of active terahertz metasurface devices based on liquid crystal
摘要
Abstract
Metasurface devices greatly enrich the interaction between light and matter,promoting the development of planar optics.In recent years,with the rapid development of terahertz(THz)technology,dynamically tunable terahertz devices have been widely studied.Liquid crystal(LC)is a unique soft matter that combines the fluidity of liquids and the order of crystals,making it indispensable in the field of displays and spatial light modulations.The integration of liquid crystals and metasurfaces enables tunable terahertz devices.In this review,we summarize three types of liquid-crystal based terahertz metasurfaces and their research progress,including liquid crystal planar terahertz devices,liquid crystal integrated metal metasurfaces,and liquid crystal integrated dielectric metasurfaces.Furthermore,techniques for fabricating liquid crystal microstructures as well as liquid-crystal integrated metal or dielectric metasurfaces are introduced.Due to the excellent responsiveness of liquid crystal metasurfaces to external stimuli including electric fields,magnetic fields,heat and light,the amplitude,frequency,phase,and polarization state of terahertz waves are dynamically manipulated.The tunable terahertz metasurface devices based on liquid crystals drastically promote the application of terahertz in imaging,communication,and sensing fields.关键词
液晶/超表面/太赫兹/可调谐器件Key words
liquid crystal/metasurface devices/terahertz/tunable devices分类
物理学引用本文复制引用
申彦春,徐雅倩,胡伟..可调谐太赫兹液晶超表面[J].液晶与显示,2025,40(3):407-423,17.基金项目
广州市教育局高校科研项目(No.202235053) Supported by University Research Project of Guangzhou Education Bureau(No.202235053) （No.202235053）
