Resonance contributions to anti-Stokes/Stokes ratios under surface enhanced Raman scattering conditions

被引：25
作者：
Maher, RC
Hou, J
Cohen, LF
Le Ru, EC
Hadfield, JM
Harvey, JE
Etchegoin, PG
Liu, FM
Green, M
Brown, RJC
Milton, MJT
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England
[2] Victoria Univ Wellington, MacDiarmid Inst Adv Mat & Nanotechnol, Sch Chem & Phys Sci, Wellington, New Zealand
[3] Univ London Imperial Coll Sci Technol & Med, Dept Elect & Elect Engn, London SW7 2BT, England
[4] Natl Phys Lab, Teddington TW11 0LW, Middx, England
来源：
JOURNAL OF CHEMICAL PHYSICS | 2005年 / 123卷 / 08期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1063/1.2004841
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：
Anti-Stokes/Stokes asymmetries under surface enhanced Raman scattering (SERS) conditions are studied for a wide variety of SERS-active media and different analytes. Evidence is provided for the existence of underlying resonances that create these asymmetries. We show here that these resonances are associated with the electromagnetic coupling between the analyte (probe) and the metal. The work demonstrates the use of the anti-Stokes/Stokes ratio as a tool to understand the hierarchy of resonances in the SERS problem, which is essential for quantification purposes. (c) 2005 American Institute of Physics.
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页数：8
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