太赫兹超材料及其成像应用研究进展

电磁超材料因具有特殊的物理性质以及在电磁波操控方面的重要应用而备受关注.本文综述了太赫兹超材料及其成像应用的研究进展:首先介绍了太赫兹超材料的研究概况,重点讨论了可调谐与可重构太赫兹超材料、太赫兹数字编码与现场可编程超材料的研究进展;在此基础上,阐述了太赫兹超材料在成像领域的应用,包括基于超表面透镜、超材料吸波器、可重构超表面和现场可编程超表面的太赫兹成像技术;最后讨论了太赫兹超材料及其成像应用发展趋势.功能可重构及智能化将是太赫兹超材料的重要发展方向,而新兴的信息超材料融合了超材料与信息技术也将使太赫兹成像更加高效便捷.

Research progress in terahertz metamaterials and their applications in imaging

Electromagnetic metamaterials have attracted more and more research interest due to their exotic physical properties and important applications in manipulating electromagnetic waves.In this paper,the research progress in terahertz metamaterials and their applications in imaging was reviewed:firstly,the research of terahertz metamaterials was overviewed,and tunable and reconfigurable terahertz metamaterials as well as terahertz digitally coding and field-programmable metamaterials were discussed in detail;then,the applications of terahertz metamaterials in imaging were illustrated,including terahertz imaging technologies based on metasurface lenses,metamaterial absorbers,reconfigurable metasurfaces,and field-programmable metasurfaces;finally,the prospects of terahertz metamaterials and their applications in imaging were provided.Reconfiguration and in telligence of the functions will be an important development direction of terahertz metamaterials,and the emerging information metamaterials which integrate meta meaterials and information technology will enable more efficient and convenient terahertz imaging.