Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/21477
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Calculations of the direct electromagnetic enhancement in surface enhanced Raman scattering on random self-affine fractal metal surfaces

AuthorsSánchez-Gil, José A. CSIC ORCID ; García-Ramos, José Vicente CSIC ORCID
Issue Date1-Jan-1998
PublisherAmerican Institute of Physics
CitationJournal of Chemical Physics 108(1): 317 (1998)
AbstractWe study the classical electromagnetic enhancement at the excitation wavelength related to surface enhanced Raman scattering (SERS) experimental configurations in the vicinity of random rough metal surfaces possessing self-affine scaling behavior. The scattered electromagnetic intensity is obtained by means of numerical calculations based on the rigorous integral equations formulation of the electromagnetic wave scattering, free from the limitations of electrostatic and/or dipolar approximations. From the enhancement of the scattered field intensity in the immediate vicinity of the surface, originated in the excitation of transversal-magnetic surface plasmon polaritons, the SERS electromagnetic mechanism on substrates of Ag, Au, and Cu is explored as a function of the surface fractal dimension, rms height, and excitation wavelength. It is found that fractality favors the occurrence of large electromagnetic enhancements, which in turn appear to be maximum at an optimum wavelength as a result of the compromise between roughness-induced light coupling into surface plasmons and absorptive losses. This optimum wavelength is shorter for Ag than for Au and Cu. Maximum local enhancements on the order of 103 are encountered for the three metals being considered.
Description9 pages, 9 figures.
Publisher version (URL)http://dx.doi.org/10.1063/1.475394
URIhttp://hdl.handle.net/10261/21477
DOI10.1063/1.475394
ISSN0021-9606
Appears in Collections:(CFMAC-IEM) Artículos

Files in This Item:
File Description SizeFormat
GetPDFServlet.pdf4,28 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

47
checked on May 13, 2022

WEB OF SCIENCETM
Citations

52
checked on May 13, 2022

Page view(s)

394
checked on May 17, 2022

Download(s)

266
checked on May 17, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.