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Journal of Nanophotonics

Surface-enhanced Raman spectroscopy scattering from gold-coated ceramic nanopore substrates: effect of nanopore size
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Paper Abstract

The dependence of magnitude of the electric near-field on the separation between metal nanoparticles for surface-enhanced Raman spectroscopy (SERS) substrates was experimentally verified. Diameters of gold-coated nanopores in a ceramic alumina substrate were varied to study the charge buildup near interparticle junctions and its effect on the enhancement factor due to SERS. The substrates were characterized by sensing a Rhodamine dye and calculating the associated Raman enhancement factors. Decreasing Au interparticle distance increases the electric near-field and shifts the plasmon resonance peak accordingly.

Paper Details

Date Published: 25 April 2013
PDF: 10 pages
J. Nanophoton. 7(1) 073592 doi: 10.1117/1.JNP.7.073592
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Paul D. Robinson, Alabama A&M Univ. (United States)
Aschalew Kassu, Alabama A&M Univ. (United States)
Anup Sharma, Alabama A&M Univ. (United States)
Tatiana V. Kukhtareva, Alabama A&M Univ. (United States)
Carlton W. Farley, Alabama A&M Univ. (United States)
Cydale C. Smith, Alabama A&M Univ. (United States)
Paul B. Ruffin, U.S. Army Research, Development and Engineering Command (United States)
Christina L. Brantley, U.S. Army Research, Development and Engineering Command (United States)
Eugene Edwards, U.S. Army Research, Development and Engineering Command (United States)

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