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Surface enhanced Raman scattering phenomenon
Author(s) -
Kruszewski Stefan
Publication year - 2006
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200510626
Subject(s) - raman scattering , raman spectroscopy , excitation , nanoparticle , materials science , surface roughness , scattering , wavelength , plasmon , surface plasmon resonance , light scattering , optics , x ray raman scattering , surface plasmon , resonance (particle physics) , nanotechnology , chemistry , optoelectronics , atomic physics , physics , composite material , quantum mechanics
Surface enhanced Raman scattering and surface enhanced fluorescence phenomena are the result of resonance excitation of localized surface plasmons in nanoparticles of some metals. By appropriate choice of the shape and size of metallic nanoparticles, the kind of adsorbed molecules and the wavelength of the exciting light, it is possible to achieve enhancement of the intensity of Raman scattering equal to 10 12 ‐10 14 . This means that only some molecules inside the exciting light beam are sufficient to record the Raman spectrum. Electromagnetic and chemical mechanisms of enhancement of Raman scattered light and methods of roughness investigation of surfaces exhibiting this promising phenomenon are described in this paper. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)