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year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 597-600 |
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Heidari S, Nozhat N. Tunable Dual-band Plasmonic Absorber Utilizing Two-layer Graphene. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :597-600
URL: http://opsi.ir/article-1-2436-en.html
URL: http://opsi.ir/article-1-2436-en.html
1- Department of Electrical Engineering, Shiraz University of Technology
Abstract: (958 Views)
In this paper, a tunable dual-band plasmonic perfect absorber composed of square graphene nanodisk and graphene L-shaped array is investigated. By choosing the chemical potential of 1eV, two absorption peaks of 100% and 99/6% with the bandwidths of 245 nm and 387 nm, respectively, at the wavelengths of 11.49 µm and 14.84 µm are achieved, which are due to the excitation and enhancement of surface plasmons of graphene. Absorptions at low and high wavelengths are related to the excitation of surface plasmons of graphene nanodisk and graphene L-shaped array, respectively. The proposed absorber can be also be used in more applications such as modulators, sensors and detectors.
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