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Silver‐coated inverse opals formed from polystyrene spheres for surface‐enhanced Raman scattering
Author(s) -
Mu Weiqiang,
Hwang DaeKue,
Chang Robert P. H.,
Ketterson John B.
Publication year - 2011
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2800
Subject(s) - polystyrene , raman scattering , materials science , substrate (aquarium) , raman spectroscopy , layer (electronics) , spheres , chemical engineering , thermal decomposition , laser , wavelength , nanotechnology , optics , optoelectronics , chemistry , composite material , polymer , organic chemistry , oceanography , physics , engineering , astronomy , geology
We have developed a new substrate for surface‐enhanced Raman scattering (SERS) measurements involving a thin silver layer deposited over an ion‐etched TiO 2 inverse opal. The latter is formed by chemically infiltrating a polystyrene opal array with TiO 2 followed by a thermal decomposition of the spheres. The SERS response of the these substrates is examined for several sphere sizes and lasers wavelengths; the results show that such substrates yield high enhance factors, comparable to substrates involving a silver layer deposited directly on a polystyrene opal array. Copyright © 2010 John Wiley & Sons, Ltd.