Surface enhanced Raman scattering activity of core-shell Au nanoparticle film

Abstract

Core-shell gold nanoparticles film was fabricated by using nanolithography and self-assembly monolayer technology. The film exhibits unique optical properties and has strong surface enhanced Raman scattering activity. The relationship between nanostructure and surface electrical field was studied by employing pyridine as the SERS probe. It was found that particle size and interparticle space are of important factors. The enhanced ration is measured more than 10⁴.