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

被引：51

作者：

Etchegoin, P. G. ^{[1
]}

Meyer, M. ^{[1
]}

Le Ru, E. C. ^{[1
]}

机构：

[1] Victoria Univ Wellington, Sch Chem & Phys Sci, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington, New Zealand

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2007年 / 9卷 / 23期

关键词：

D O I：

10.1039/b704013j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：3006 / 3010

页数：5

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