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[59190] Artykuł: Effect of Periodicity in the Resonant Scattering of Light by Finite Sparse Configurations of Many Silver NanowiresCzasopismo: PLASMONICS Tom: 9, Zeszyt: 2, Strony: 389-407ISSN: 1557-1955 Wydawca: SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA Opublikowano: Kwiecień 2014 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 30 Klasyfikacja Web of Science: Article DOI Web of Science YADDA/CEON Keywords: Wave scattering  Absorption  Silver wire  Finite grating  Plasmon resonance  Grating resonance  |
We consider the two-dimensional (2-D) scattering of the H- and E-polarized plane waves by several discrete configurations made of M > > 1 periodically arranged circular cylindrical silver wires. To find the scattered field, we use the field Fourier expansions in local coordinates and addition theorems for cylindrical functions. Resulting M x M block-type matrix equation is cast to the Fredholm second-kind form that guarantees convergence of numerical solution when each block is truncated to finite dimensions and truncation order is taken larger. The scattering and absorption cross-sections and the near-field patterns are computed. The interplay of plasmon and grating-type resonances is studied for finite in-line and stacked arrays, corners, and crosses made of nano-size silver wires in the visible range of wavelengths, with the refractive index of silver taken from the experimental data.