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Sers: Plasmonic Nanogap‐Enhanced Raman Scattering Using a Resonant Nanodome Array (Small 18/2012)
Author(s) -
Wu HsinYu,
Choi Charles J.,
Cunningham Brian T.
Publication year - 2012
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201290098
Subject(s) - materials science , plasmon , lithography , raman scattering , silicon , nanotechnology , optoelectronics , polymer , surface enhanced raman spectroscopy , raman spectroscopy , optics , composite material , physics
PNA substrates created by B. T. Cunningham and co‐workers on page 2878 provide a dense array of electromagnetic hot spots within ∼10 nm gaps between adjacent gold domes. The structures are inexpensively produced over large surface areas on flexible plastic substrates using nanoreplica molding to produce an array of polymer cylinders. The nanogap spacing is controlled via the thickness of deposited films of silicon dioxide and metal, so the structure can be produced without lithography. These PNA substrates are suitable for the real‐time detection of biological and chemical compounds.