Enhancement factor distribution around a single SERS Hot-spot and its relation to Single Molecule detection
Chemical Physics
2009-11-13 v1 Optics
Abstract
We provide the theoretical framework to understand the phenomenology and statistics of single-molecule (SM) signals arising in Surface-Enhanced Raman Scattering (SERS) under the presence of so-called electromagnetic hot-spots (HS's). We show that most characteristics of the SM-SERS phenomenon can be tracked down to the presence of tail-like (power law) distribution of enhancements and we propose a specific model for it. We analyze, in the light of this, the phenomenology of SM-SERS and show how the different experimental manifestations of the effect reported in the literature can be analyzed and understood under a unified ``universal'' framework with a minimum set of parameters.
Cite
@article{arxiv.physics/0608139,
title = {Enhancement factor distribution around a single SERS Hot-spot and its relation to Single Molecule detection},
author = {E. C. Le Ru and P. G. Etchegoin and M. Meyer},
journal= {arXiv preprint arXiv:physics/0608139},
year = {2009}
}
Comments
13 pages, 4 figures, submitted to J. Chem. Phys