Adatom Hypothesis as a Predominant Mechanism of Surface Enhanced Raman Scattering: A Review of Experimental Argumentation |
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| Authors: | R M Lazorenko-Manevich |
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| Institution: | (1) Russian Federation Scientific Center “Karpov Research Institute of Physical Chemistry” (Obninsk Branch), Obninsk, Kaluga oblast, 249020, Russia |
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| Abstract: | A contemporary review of research concerning the mechanism of surface enhanced Raman scattering (SERS) is presented and it is stated that this problem is yet to be solved. The necessity to yet once again analyze some of the familiar experimental observations and the deep-rooted beliefs and revise quantitative evaluations of SERS enhancement via major mechanisms (electromagnetic and chemical) with allowance made for most important experimental characteristics of SERS is substantiated. The characteristics are enumerated and the role they play in the above evaluations is sketched. Attention is focused mainly on electrochemical aspects of SERS problem, which to a large extent define the content and salient features of SERS and provide basic experimental justification for the so-called adatom hypothesis.__________Translated from Elektrokhimiya, Vol. 41, No. 8, 2005, pp. 899–935.Original Russian Text Copyright © 2005 by Lazorenko-Manevich.In memory of Vladislav Vladimirovich Marinyuk |
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| Keywords: | surface enhanced Raman scattering electrochemical roughening of electrode surface metal surface defects enhancement of electromagnetic field on electrode surface surface plasmons resonance Raman scattering adsorption on electrodes metal adatoms silver gold copper pyridine anions |
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