Dielectric wire wrapped in graphene layer with a slot as a plasmonic absorber of THz waves

S.V. Dukhopelnykov (1) , M.G. Vigueras (2) , R. Sauleau (2)

1 NASU - National Academy of Sciences of Ukraine
2 IETR - Institut d'Électronique et des Technologies du numéRique

Considered is the scattering of an H-polarized plane wave by a dielectric wire with a graphene cover, which is shaped trip. We derive a hyper-singular integral equation for the electric current induced on the strip and discretize it using a Nystrom-type method. This provides the convergence of the algorithm that enables us to plot the dependences of the absorption cross-section (ACS) on the frequency, graphene strip angular width, and its orientation angle. We derive approximate characteristic equation for the frequencies of the plasmon modes as a function of the width of graphene strip. At the resonance frequencies, we control the maximum values of ACS by changing the orientation angle of the graphene strip. © 2019 IEEE.

Keywords: Hypersingular integral equation; Nystrom-type method; Plasmon mode; Dielectric wire

Domains: Engineering Sciences [physics]

S.V. Dukhopelnykov, M.G. Vigueras, R. Sauleau. Dielectric wire wrapped in graphene layer with a slot as a plasmonic absorber of THz waves. 2nd IEEE Ukraine Conference on Electrical and Computer Engineering, UKRCON 2019, Jul 2019, Lviv, Ukraine. pp.766-770, ⟨10.1109/UKRCON.2019.8879886⟩. ⟨hal-02399671⟩