基于SWCNTs薄膜的多谐振环太赫兹超表面传感特性  

THz metasurface sensing characteristics of multiple resonant rings based on Single-Walled Carbon Nanotubes films

作　　者：张向 罗帆 任铭欣 宋博晨 王玥[1] ZHANG Xiang;LUO Fan;REN Mingxin;SONG Bochen;WANG Yue(Key Laboratory of Ultrafast Photoelectric Technology and Terahertz Science in Shaanxi,Xi'an University of Technology,Xi'an Shaanxi 710048,China)

机构地区：[1]西安理工大学陕西省超快光电技术与太赫兹科学重点实验室,陕西西安710048

出　　处：《太赫兹科学与电子信息学报》2024年第4期353-359,372,共8页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(61975163);陕西省重点研发计划资助项目(2023GXLH-038);陕西高校青年创新团队资助项目(21JP084);西安市科技局重点产业链关键核心技术攻关资助项目(23LLRH0057)。

摘　　要：基于单壁碳纳米管(SWCNTs)薄膜,构建了一种具有多频窄带共振效应的新型太赫兹(THz)超表面。深入分析了周期性微结构单元参数对超表面的共振特性的影响;通过仿真及理论计算对器件的共振耦合机理进行研究,二者具有较好的一致性。通过在超表面覆盖不同折射率的介质层,分析这种THz超表面器件的折射率传感特性,灵敏度分析结果显示,该超表面器件可实现最高64 GHz/RIU的折射率传感。A novel terahertz(THz)metasurface with multi-frequency narrow band resonance effect is constructed based on Single-Walled Carbon Nanotubes(SWCNTs)thin films.The influence of structural parameters of periodic microstructure unit on the resonance characteristics of the metasurface is analyzed.Furthermore,the resonance coupling mechanism of the device is studied,and the simulation and theoretical calculations have good consistency.In addition,the refractive index sensing characteristics of this THz metasurface device are analyzed by covering a dielectric layer with different refractive indexes on the metasurface.The function fitting results show that the metasurface device can achieve high sensitivity refractive index sensing up to 64 GHz/RIU.

关 键 词：太赫兹 单壁碳纳米管(SWCNTs) 超表面 传感器 

分 类 号：TN607[电子电信—电路与系统]