Liquid crystal control of the plasmon resonances at terahertz frequencies in graphene microribbon gratings

Liquid crystal control of the plasmon resonances at terahertz frequencies in graphene microribbon gratings

We theoretically study the influence of the liquid crystal (LC) orientational state on the absorption, reflection, and transmission spectra of a graphene microribbon grating placed between a nematic LC and an isotropic dielectric substrate. We calculate the absorption, reflection, and transmission c...

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Veröffentlicht in:Physical review. E 2017-08, Vol.96 (2-1), p.022703-022703, Article 022703
Hauptverfasser: Reshetnyak, V Yu, Zadorozhnii, V I, Pinkevych, I P, Evans, D R
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Zadorozhnii, V I
Pinkevych, I P
Evans, D R
description We theoretically study the influence of the liquid crystal (LC) orientational state on the absorption, reflection, and transmission spectra of a graphene microribbon grating placed between a nematic LC and an isotropic dielectric substrate. We calculate the absorption, reflection, and transmission coefficients at normal incidence of a far-infrared transverse magnetic wave (THz) and show that control of the orientational state of the LC layer enables the manipulation of the magnitude of the absorption and reflection maxima. The influence the LC orientational state on the plasmonic resonance increases with increasing the isotropic substrate dielectric constant and the graphene microribbon width to grating spacing ratio.
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title Liquid crystal control of the plasmon resonances at terahertz frequencies in graphene microribbon gratings
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