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Updated: Dec 25, 2025
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Published on: November 21, 2019
Modelling the Surface Plasmon Spectra of an ITONanoribbon Grating Adjacent to a LiquidCrystal Layer
Surface Plasmon Plasmon Spectra Nanoribbon Grating Ito Liquid Crystal Surface Plasmon Plasmon Spectra Nanoribbon Grating Ito Liquid Crystal1, Victor I Zadorozhnii1, Igor P Igor P1
1Physics Faculty, Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine.
Abstract:
The reflection and transmission coefficients of an indium tin oxide (ITO) nanoribbongrating placed between a nematic liquid crystal (LC) layer and an isotropic dielectric medium arecalculated in the infrared region. Reflection and transmission spectra in the range of 1-5 μm relatedto the surface plasmon excitation in the ITO nanoribbons are obtained. Dependence of the peakspectral position on the grating spacing, the ribbon aspect ratio, and the 2D electron concentrationin the nanoribbons is studied. It is shown that director reorientation in the LC layer influences theplasmon spectra of the grating, enabling a control of both the reflection and transmission of thesystem. The data obtained with our model are compared to the results obtained using COMSOLsoftware, giving the similar results.
