Regensburg 2025 – wissenschaftliches Programm

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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz

AKPIK 5: Poster

AKPIK 5.11: Poster

Donnerstag, 20. März 2025, 15:00–16:30, P2

The graphene resonant metasurface substrate in near-zero refractive index regime to control the surface plasmon-polariton propagation length — •Zoya Eremenko — Leibniz-Institut für Festkörper- und Werkstoffforschung, Dresden, Deutschland

The study goal is to identify and investigate conditions for controlling the propagation length of graphene surface plasmon-polaritons (SPP) through the utilization of hybrid graphene-dielectric metasurfaces. We study the spectral characteristics of resonant multipole modes in all-dielectric metasurface using the photonic crystal approach, metasurface unit cell modelling approach and implement these approaches by the commercial software Comsol Multiphysics 6.2. For controlling the propagation length of graphene SPPs we used all-dielectric metasurface as a substrate of graphene layer in a near-zero refractive index regime. The determined the parameters of the near-zero refractive index regime for the studied metasurface, which is crucial for achieving the main project goal of controlling SPP propagation length in the graphene layer. Knowing the effective refractive index of the metasurface unit cell in the near-zero regime, these values are used in Comsol modeling the hybrid metasurface as a graphene layer substrate to calculate the SPP propagation length.

Keywords: propagation length; surface plasmon-polaritons; graphene; all-dielectric metasurface; Comsol Multiphysics