Special Section on Nanostructured Thin Films: Fundamentals and Applications

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

[+] Author Affiliations
Paul David Robinson

Alabama A&M University, Department of Physics, Chemistry and Mathematics, 4900 Meridian Street, Normal, Alabama 35762

Aschalew Kassu

Alabama A&M University, Department of Engineering, Construction Management and Industrial Technology, 4900 Meridian Street, Normal, Alabama 35762

Anup Sharma

Alabama A&M University, Department of Physics, Chemistry and Mathematics, 4900 Meridian Street, Normal, Alabama 35762

Tatiana Kukhtareva

Alabama A&M University, Department of Physics, Chemistry and Mathematics, 4900 Meridian Street, Normal, Alabama 35762

Carlton William Farley

Alabama A&M University, Department of Physics, Chemistry and Mathematics, 4900 Meridian Street, Normal, Alabama 35762

Cydale Smith

Alabama A&M University, Center for Irradiation of Materials, 4900 Meridian Street, Normal, Alabama 35762

Paul Ruffin

U.S. Army Research, Development and Engineering Command, Huntsville, Alabama 35898

Christina Brantley

U.S. Army Research, Development and Engineering Command, Huntsville, Alabama 35898

Eugene Edwards

U.S. Army Research, Development and Engineering Command, Huntsville, Alabama 35898

J. Nanophoton. 7(1), 073592 (Apr 25, 2013). doi:10.1117/1.JNP.7.073592
History: Received October 17, 2012; Revised March 5, 2013; Accepted March 6, 2013
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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.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Paul David Robinson ; Aschalew Kassu ; Anup Sharma ; Tatiana Kukhtareva ; Carlton William Farley, III, et al.
"Surface-enhanced Raman spectroscopy scattering from gold-coated ceramic nanopore substrates: effect of nanopore size", J. Nanophoton. 7(1), 073592 (Apr 25, 2013). ; http://dx.doi.org/10.1117/1.JNP.7.073592


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