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Proceedings Paper

Broadband tunable mid-infrared metamaterial absorber based on graphene and VO2 thin film
Author(s): Junhe Yang; Shuai Xun; Zhenyao Chen; Changhong Chen
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Paper Abstract

We design a broadband absorber formed by placing the cross-shaped metallic resonators, whose vertical and horizontal arms have difference length, with 90° rotated within a super-unit-cell arranged in mirror symmetry. Simulation results indicate that absorption efficiency greater than 95% can be achieved in a broadband frequency region under normal incidence. We employ a design scheme with the integration of graphene and VO2 thin film, which allows independent electric tuning and thermal tuning. Our results reveal that the resonance will be blue-shifted with the increase of Fermi level and red-shifted with the increase of temperature. it thus broadens the tuning range of metamaterial absorbers by combining the electric tuning of graphene with the thermal tuning of VO2 thin film. this structure may have great application potential in frequency selective detectors and testing technology

Paper Details

Date Published: 24 July 2018
PDF: 6 pages
Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108272J (24 July 2018); doi: 10.1117/12.2326937
Show Author Affiliations
Junhe Yang, Huazhong Univ. of Science and Technology (China)
Shuai Xun, Huazhong Univ. of Science and Technology (China)
Zhenyao Chen, Huazhong Univ. of Science and Technology (China)
Changhong Chen, Huazhong Univ. of Science and Technology (China)
Changchun Institute of Optics (China)


Published in SPIE Proceedings Vol. 10827:
Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018)
Yingjie Yu; Chao Zuo; Kemao Qian, Editor(s)

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