Esempi
According to their calculations, when light shines on the largest sphere, it sets up a surface plasmon - a wave of vibrating electrons on the surface of the sphere - that creates an oscillating electric field.
The surface plasmons then decay into photons, which are emitted from the surface.
It is based upon the coupling of plasmons (charge density oscillations) excited by light in thin metal films, with waveguide modes in a dielectric layer overcoating the metal film.
At each groove, plasmons scatter and radiate some light, while some plasmon energy remains to travel to the next groove.
When light strikes a metallic material, waves of electrons, called plasmons , are generated.
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