title: Plasmonic properties of metallic nanoparticles: the effects of size quantization.
abstract: We examine the size quantization of plasmons in metallic nanoparticles using time-dependent density functional theory. For small particles in the quantum limit, we identify "quantum core plasmons" and "classical surface plasmons", both of which are collective oscillations comprised of multiple single-particle transitions. As particle size increases, the response of the classical surface plasmons becomes much larger than that of the quantum core plasmons.
authors.affiliation: Joint Quantum Institute and Quantum Measurement Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, USA. ETownsend@eml.cc
authors.forename: Emily
authors.initials: E
authors.lastname: Townsend
authors.forename: Garnett W
authors.initials: GW
authors.lastname: Bryant
mesh_terms: D003198:Computer Simulation; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D008956:Models, Chemical; D010316:Particle Size; D011789:Quantum Theory; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties