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Graphene-metasurface for wide-incident-angle terahertz absorption
Frontiers of Information Technology & Electronic Engineering ( IF 3 ) Pub Date : 2020-11-11 , DOI: 10.1631/fitee.2000079
Ri-hui Xiong , Xiao-qing Peng , Jiu-sheng Li

We demonstrate a graphene-metasurface structure for tunable wide-incident-angle terahertz wave absorption, which involves depositing planar arrays of Omega-shaped graphene patterns on a silicon dioxide substrate. We also discuss how the graphene Fermi-level layer and various substrates affect the absorption characteristics. The absorption of the proposed terahertz absorber is above 80% at an incident angle of 0–60° in frequencies ranging from 0.82 to 2.0 THz. Our results will be very beneficial in the application of terahertz wave communications and biomedical imaging/sensing systems.



中文翻译:

石墨烯-表面吸收大入射角太赫兹

我们展示了可调广入射角太赫兹波吸收的石墨烯-金属表面结构,该结构涉及在二氧化硅衬底上沉积Omega形石墨烯图案的平面阵列。我们还将讨论石墨烯费米能级层和各种基材如何影响吸收特性。拟议的太赫兹吸收器在0.82至2.0 THz的频率下,入射角为0–60°时的吸收率超过80%。我们的结果将对太赫兹波通信和生物医学成像/传感系统的应用非常有益。

更新日期:2020-11-12
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