Statistics of single molecule SERS signals: is there a Poisson distribution of intensities?

Literature Information

Publication Date 2007-05-04
DOI 10.1039/B704013J
Impact Factor 3.676
Authors

P. G. Etchegoin, M. Meyer, E. C. Le Ru


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Abstract

This paper is aimed at clarifying the statistics of single molecule (SM) surface enhanced Raman scattering (SERS) signals. The argument of the possible existence of a Poisson distribution in the statistics of intensities in SM-SERS has been used many times in the last decade as a proof of single molecule detection. We show theoretically and experimentally that the conditions under which a Poisson distribution would be present are so unlikely to exist in a real system that there is no other option but to attribute the claims to poor statistical sampling. We believe the argument based on Poisson statistics should be dropped as a proof of single molecule detection in SERS.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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