Roughness Effects in Surface Enhanced Raman Scattering - Evidence for Electromagnetic and Charge Transfer Enhancement Mechanism

Investigations of Surface Enhanced Raman Scattering (SERS) of pyridine adsorbed on the silver electrode of different roughness have been performed. The obtained results indicate that the micro- and the atomic scale roughness influence the intensity of SERS signal. This proves for the electromagnetic and charge transfer origin of the enhancement in the SERS phenomenon