Photochemistry at Corrugated Thin Metal Films: A Phenomenological Approach

摘要

A phenomenological model is adopted to explore possible novel photochemical phenomena for molecules in the vicinity of a corrugated thin metal film, with detailed results worked out for the photoabsorption cross section for molecules in the vicinity of a grating film. A mechanism is proposed by which enhanced selective photoabsorption may be achieved based on the different nature of the coupling of the molecular dipole and the incident laser light to the surface plasmon modes of the thin films. Keywords: Photochemistry; Thin metal films; Corrugated; Selective photoabsorption; Molecular dipole; Surface plasmon. (JES)