PLASMON RESONANCE OF SILVER AND GOLD NANOPARTICLES IN ORGANIC MEDIA: PHYSICAL MECHANISMS AND SPECTRAL MANIFESTATIONS
The paper studies the mechanism of localised surface plasmon resonance in metal nanoparticles incorporated into organic matrices. The physical nature of plasmon excitations as coherent oscillations of the conduction band electron gas arising from interaction with electromagnetic radiation is analysed. Unlike surface plasmon polaritons, which propagate along an extended metal-dielectric interface, localised plasmons are confined to the volume of nanoparticles and exhibit radiative properties.