Tunable dual-band metamaterial absorber based on cross-shaped graphene

Di Wu; He Feng; Zixuan Xu; Kunpeng Jiao; Feng Xia; Weijin Kong; Maojin Yun

doi:10.1117/12.2528179

9 September 2019 Tunable dual-band metamaterial absorber based on cross-shaped graphene

Di Wu, He Feng, Zixuan Xu, Kunpeng Jiao, Feng Xia, Weijin Kong, Maojin Yun

Proceedings Volume 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII; 110821Y (2019) https://doi.org/10.1117/12.2528179
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States

Abstract

In this paper, we propose a tunable dual-band metamaterial absorber with wide-angle characteristics. The absorber is composed of a cross-shaped graphene layer and a layer of gold separated by a dielectric spacer. The simulated results show that there are two near-perfect absorption peaks in infrared band. Also, the peak wavelengths of absorber can be adjusted by changing the Fermi energy of the graphene and geometric parameters. In addition, the absorber can maintain a high absorption at a wide range of incident angles for both TE and TM waves. Such a device could be used as tunable sensors, filters, detector or other graphene-based photonic devices.

Citation Download Citation

Di Wu, He Feng, Zixuan Xu, Kunpeng Jiao, Feng Xia, Weijin Kong, and Maojin Yun "Tunable dual-band metamaterial absorber based on cross-shaped graphene", Proc. SPIE 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII, 110821Y (9 September 2019); https://doi.org/10.1117/12.2528179

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KEYWORDS

Graphene

Metamaterials

Absorption

Sensors

Dielectrics

Gold

Infrared radiation

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