Abstract
Resonant metal-dielectric nanostructures of the core-shell type can provide unusual optical properties originated from spectral overlapping of electric and magnetic resonances of the nanostructure components. Here we numerically investigate the geometry and scattering cross section spectra of a core-shell nanostructure, where the core is gold, and the shell is crystalline silicon. We study spherical and cylindrical types of the nanostructures and search optimal geometrical parameters in the terms of spectral overlapping of the resonances. The obtained geometry parameters can be utilized for the first experimental realization of the metal-dielectric core-shell nanostructures.
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