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Highly Raman‐Enhancing Substrates Based on Silver Nanoparticle Arrays with Tunable Sub‐10 nm Gaps
Author(s) -
Wang H.H.,
Liu C.Y.,
Wu S.B.,
Liu N.W.,
Peng C.Y.,
Chan T.H.,
Hsu C.F.,
Wang J.K.,
Wang Y.L.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200501875
Subject(s) - materials science , raman spectroscopy , substrate (aquarium) , nanoparticle , nanotechnology , raman scattering , silver nanoparticle , optoelectronics , optics , oceanography , physics , geology
Uniform and highly surface‐enhanced Raman spectroscopic (SERS)‐active substrates have been fabricated using Ag nanoparticle arrays with unprecedented small tunable gaps. The dependence of the enhancing capability of the substrate on the gap size provides quantitative evidence for the collective SERS effect and confirms predictions of interparticle‐coupling‐induced Raman enhancement.