A quantum mechanical approach to an analytical expression of the single-molecule-single-nanoparticle surface enhanced raman scattering

Author

Wenhua Gu ; Kyekyoon Kim

Author_Institution

Univ. of Illinois at Urbana-Champaign, Urbana

Volume

1

fYear

2006

fDate

22-25 Oct. 2006

Abstract

A quantum mechanical theory elucidating the single-molecule-single-nanoparticle surface enhanced Raman scattering (SERS) process is proposed. The theory attributes the principal mechanism of the process to an increase of the spontaneous emission rate of a molecule adsorbed to a nanoparticle due to the enhanced local electromagnetic field and the Purcell effect. The result is a first-ever analytical expression for the single-molecule-single-nanoparticle SERS enhancement factor in good agreement with experiment.

Keywords

quantum theory; surface enhanced Raman scattering; Purcell effect; enhanced local electromagnetic field; quantum mechanical approach; single molecule detection; single-molecule-single-nanoparticle surface enhanced Raman scattering; spontaneous emission rate; Optical scattering; Optical sensors; Optical surface waves; Plasmons; Quantum computing; Quantum mechanics; Raman scattering; Spontaneous emission; Stimulated emission; Surface waves; SERS; enhancement factor; nanoparticle; single-molecule detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE

Conference_Location

Gyeongju

Print_ISBN

978-1-4244-0540-4

Type

conf

DOI

10.1109/NMDC.2006.4388718

Filename

4388718