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Microwave monitoring of silver nanoparticle sintering for surface‐enhanced Raman scattering substrates
Author(s) -
Figueroa Manuel,
Pourrezaei Kambiz,
Tyagi Somdev
Publication year - 2012
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.3073
Subject(s) - raman scattering , nanoparticle , materials science , drop (telecommunication) , nanotechnology , raman spectroscopy , silver nanoparticle , annealing (glass) , microwave , colloidal gold , sintering , colloid , chemical engineering , optics , composite material , telecommunications , physics , engineering , quantum mechanics , computer science
One of the most widely used methods for surface‐enhanced Raman scattering (SERS) employs silver or gold nanoparticles either in colloidal suspension or in the dry‐drop form. In such substrates the SERS amplification factors depend critically on the interparticle distances. Here, we report that microwave absorption as a function of temperature in dry‐drop substrates can be used as a probe to demarcate temperature regions for thermal annealing to produce SERS substrates with very high amplification factors. Copyright © 2011 John Wiley & Sons, Ltd.