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Off-resonance field enhancement by spherical nanoshells

Miroshnichenko, Andrey


We study light scattering by spherical nanoshells consisting of metal-dielectric composites. We consider several geometries of nanoshell particles with dielectric and metallic cores. We demonstrate that in all studied cases the local field enhancement takes place in out-of-resonance regions ("dark states"), which nevertheless can be understood in terms of the Fano resonance. At optimal conditions the light is mostly localized inside the dielectric material and the enhancement factor up to four...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.81.053818


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