Vibrational Spectroscopy Beyond the Diffraction Limit: It Enhanced Raman Scattering

摘要

It is a well-known fact that the SERS effect can improve the Raman signal itensity by several orders of magnitude. However, a rather severe limitation of SERS is that the enhancement varies stongly with the substrate morpology and therefore with the lateral position and hence critically depends on the substrate preparation, which makes quantitative measurements almost improssible.