Non-Plasmon Resonances in the E-polarized Plane Wave Scattering and Absorption by a Circular Dielectric Wire with Partial Graphene Cover

We analyze how the total scattering cross-section (TSCS) and absorption cross-section (ACS) of a circular dielectric rod, illuminated with the E-polarized plane wave, is modified by a conformal graphene strip of arbitrary angular width and chemical potential. In the core of our treatment, there is a...

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Bibliographic Details
Published inConference proceedings (IEEE International Scientific Conference Electronics and Nanotechnology. Online) pp. 160 - 163
Main Authors Mikhailikova, Iryna, Dukhopelnykov, Sergii V., Sauleau, Ronan
Format Conference Proceeding
LanguageEnglish
Published IEEE 10.10.2022
Subjects
Absorption
absorption cross-section
dielectric rod
dual series
Graphene
Harmonic analysis
Resonant frequency
Scattering
Strips
total scattering cross-section
Wires
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ISSN2693-3535
DOI10.1109/ELNANO54667.2022.9927110

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Summary:We analyze how the total scattering cross-section (TSCS) and absorption cross-section (ACS) of a circular dielectric rod, illuminated with the E-polarized plane wave, is modified by a conformal graphene strip of arbitrary angular width and chemical potential. In the core of our treatment, there is a dual series equation where the unknown are the field angular Fourier harmonics. We subject this equation to the Inverse Discrete Fourier Transform (IDFT) that yields a Fredholm second kind matrix equation. Such a procedure guarantees the convergence of the obtained numerical results. We present the normalized TSCS and ACS versus the angular width of graphene strip and the frequency in the range from the statics to 1 THz. These plots convincingly demonstrate that the resonances on the lowest non-plasmon natural modes of the considered scatterer are still tunable due to the tunability of graphene's conductivity.
ISSN:2693-3535
DOI:10.1109/ELNANO54667.2022.9927110