Low-Frequency Surface-Enhanced Raman Scattering from Fractal Vibrational Modes Localized at the NaCl-Na Colloid Interface

Abstract

An experimental study of the very-low-energy Raman scattering from Na-colloids in NaCl is presented. The spectra show evidence of fractal structure of the Na-colloids and of surface enhancement by the metal interface. A model is developed which provides information on the fractal and spectral dimensions.