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Surface-enhanced Raman scattering from silver-coated opals

Title
Surface-enhanced Raman scattering from silver-coated opals
Author(s)
Mu, WeiqiangHwang, Dae-KueChang, Robert P. H.Sukharev, MaximTice, Daniel B.Ketterson, John B.
Issued Date
2011-03
Citation
Journal of Chemical Physics, v.134, no.12
Type
Article
Keywords
PolystyrenesPyridineRaman ScatteringRaman SpectrometrySilicate MineralsSilverSilver FilmSPECTRASPECTROSCOPYSpectrum Analysis, RamanSphere DiameterSPHERESSulfhydryl CompoundsSurface Enhanced Raman ScatteringThiol DerivativeThiophenolZnOPolystyrene SpheresAdsorptionArticleArtificial OpalsBENZENETHIOLBenzenethiolsChemistryCoated FilmsComputer SimulationDielectric LatticesElectric FieldsElectrodeEnhancement FactorExcitation WavelengthFinite-Difference Time-Domain SimulationFinite Difference Time Domain MethodGOLD NANOPARTICLESLaser ExcitationLaser WavelengthMETALLIC-FILMSMethodologyMonolayersOPTICAL-PROPERTIESPhenol DerivativePhenolsPolystyrene Derivative
ISSN
0021-9606
Abstract
We describe surface-enhanced Raman scattering measurements from a benzenethiol monolayer adsorbed on a silver-coated film that is, in turn, deposited on an artificial opal, where the latter is a close-packed three-dimensional dielectric lattice formed from polystyrene spheres. Data for a range of sphere sizes, silver film thicknesses, and laser excitation wavelengths are obtained. Enhancement factors can be in the range of 10 7. To partially explain these large enhancements, we have performed model finite-difference time domain simulations of the position-dependent electric fields generated at the opal surfaces for several experimentally studied laser wavelengths and sphere diameters. © 2011 American Institute of Physics.
URI
http://hdl.handle.net/20.500.11750/5395
DOI
10.1063/1.3570827
Publisher
American Institute of Physics Publishing
Related Researcher
  • 황대규 Hwang, Dae-Kue
  • Research Interests Solar Cell; 태양전지; Renewable Energy; 재생 에너지; Hydrogen Energy; 수소에너지; Light Emitting Diode; 발광다이오드; Thin Film Transistor; 박막 트랜지스터
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Division of Energy & Environmental Technology 1. Journal Articles

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