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A quantum or quasiparticle associated with a local collective oscillation of charge density.
- ‘When light strikes a metallic material, waves of electrons, called plasmons, are generated.’
- ‘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.’
1950s: from plasma + -on.
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