Graphene Based Controllable Broadband Terahertz Metamaterial Absorber with Transmission Band

被引:36
作者
Zhou, Qihui [1 ]
Zha, Song [1 ]
Liu, Peiguo [1 ]
Liu, Chenxi [1 ]
Bian, Li-an [1 ,2 ]
Zhang, Jihong [1 ]
Liu, Hanqing [1 ]
Ding, Liang [1 ]
机构
[1] Natl Univ Def Technol, Coll Elect Sci, Changsha 410073, Hunan, Peoples R China
[2] Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410114, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
metamaterial absorber; graphene; broadband absorption; passband; ABSORPTION; LAYER;
D O I
10.3390/ma11122409
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A graphene-based controllable broadband terahertz metamaterial absorber with transmission band is presented in this paper. It consists of a graphene-SiO2-frequency selective surface (FSS) sandwich structure. The sinusoidal graphene layer supports continuous plasmonic resonances, forming a broad electric-tuning absorbing band. Bandpass FSS constructs a transmission window outside the absorbing band. The simulation results indicate that the absorption from 0.5 THz to 1 THz can be tuned continuously from 0.4 to 0.9 with angle and polarization independence. A transparent window peaking at 1.65 THz maintains high transmittance over 0.7. The metamaterial absorber has potential applications for detection, stealth, filtering, and electromagnetic compatibility.
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页数:8
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