作者: Alexander Wokaun
DOI: 10.1016/S0081-1947(08)60314-8
关键词: Surface (mathematics) 、 Optics 、 Absorption (electromagnetic radiation) 、 Localized surface plasmon 、 Surface second harmonic generation 、 Materials science 、 Computational physics 、 Particle 、 Raman scattering 、 Raman spectroscopy 、 Plasmon
摘要: Publisher Summary The chapter presents a study on surface- enhanced electromagnetic processes. discusses evidence that an mechanism involving localized surface plasmons provides very important contribution to the enhancement. Experiments second harmonic generation, as well one- and two-photon absorption by adsorbed dyes, are described. They emphasize generality of phenomenon provide further strong support for model. Characteristic observations in surface-enhanced Raman scattering (SERS) experiments reviewed. It was established preparation microscopically rough necessary prerequisite observing SERS. metals silver gold proved be most efficient providing Along with experimental investigations, variety theoretical models were proposed explain effect, which included this chapter. model, forms basis subsequent discussion, is described, main emphasis physical origin effect. Strong presented. expression enhancement analyzed represented product purely geometrical “lightning-rod’’ factor representing local field because particle plasmon resonances.