A solution of the two-dimensional integro-differential equation describing diffraction of electromagnetic waves on metallic nanovibrators and on nanocrystals coated by a metallic film was obtained. Copper and gold nanoantenna characteristics were studied theoretically in the optical range. It was noted that the dependence of the scattered field on frequency is of a resonant character and the resonant wavelengths of nanovibrators are larger than those of an ideally conducting vibrator of the same size.
$^1$Southern Federal University, ul. Sorge 5, Rostov-on-Don, 344090, Russia
$^2$FGUP GKB Svyaz’, pr. Sokolova 96, Rostov-on-Don, 344010, Russia
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