title: Plasmon spectroscopy of metallic nanoparticles above flat dielectric substrates.
abstract: We numerically analyze the spectral properties of localized plasmon resonances in metal nanoparticles when these are above a dielectric substrate. This analysis is performed as a function of the various parameters involved in the problem (relative optical properties, particle-substrate separation, angle of incidence, etc.). It can be shown that from the spectral behavior of the resonance in the far field, information about particle near-field interactions can be obtained.
authors.affiliation: Grupo de Optica, Departamento de Física Aplicada, Universidad de Cantabria, Avda, Los Castros, 39005 Santander, Spain. morenof@unican.es
authors.forename: F
authors.initials: F
authors.lastname: Moreno
authors.forename: F
authors.initials: F
authors.lastname: González
authors.forename: J M
authors.initials: JM
authors.lastname: Saiz