石墨烯-二氧化钒复合结构超宽带吸波器特性研究  

Study of Characteristics of Graphene-Vanadium Dioxide Composite Ultrawideband Absorber

作　　者：王璐[1] 曹斌照[1] 陶鹏飞 Wang Lu;Cao Binzhao;Tao Pengfei(School of Physics,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]太原理工大学物理学院,山西太原030024

出　　处：《激光与光电子学进展》2025年第1期265-273,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(62175178);中央引导地方科技发展资金项目(YDZJSX2021A013)。

摘　　要：基于石墨烯-二氧化钒复合超材料结构,提出了一种可调谐超宽带超材料吸波器。利用石墨烯的电可调谐特性和二氧化钒的相变特性,实现了超宽带灵活可调的功能。在吸收率超过90%的前提下,该吸波器在5.4491~12.4521 THz频率范围内吸收带宽达到7.003 THz,相对带宽为78.24%。此外,分析了石墨烯费米能级、二氧化钒电导率的变化以及入射角和偏振角的变化对吸收率的影响。分析结果表明,所设计的吸波器具有超宽带、对入射角与偏振不敏感及灵活的可调谐性,对于优化超材料吸波器的性能有着重要的意义。This study proposes a tunable ultrawideband metamaterial absorber based on a graphene-vanadium dioxide composite metamaterial structure.Ultrawideband flexible and adjustable functions are realized using the electrically tunable properties of graphene and the phase-transition properties of vanadium dioxide.Under the premise that the absorption rate exceeds 90%,the absorption bandwidth of the absorber reaches 7.003 THz in the frequency range of 5.4491‒12.4521 THz,and the relative bandwidth is 78.24%.The effects of the Fermi level of graphene,vanadium dioxide conductivity,incidence angle,and polarization angle on the absorption rate are also analyzed.Analytical results show that the proposed absorber has an ultrawideband,is insensitive to the incidence angle and polarization,and exhibits flexible tunability.The study also finds that the optimization of the performance of metamaterial absorbers is of great significance.

关 键 词：复合超材料结构 石墨烯-二氧化钒 超宽带 吸波器 

分 类 号：O441.4[理学—电磁学]