Anomalous scattering of light by finite clusters of silver nanowires containing periodicity

摘要

Considered is the problem of the H-polarized plane wave scattering by several configurations of finite number of circular silver nanowires. Using the Fourier expansions and addition theorems for cylindrical functions, we perform analytical regularization and obtain a block-type Fredholm second-kind matrix equation. Numerical solution has a guaranteed convergence. In computations, we consider the gratings with shifted layers made of silver nanowires and a linear chain in a cloud of arbitrarily located similar nanowires in the visible-light range of wavelengths. The scattering and absorption cross-sections, near and far-field patterns are calculated and the observed resonance effects are studied.