25 April 2013 Surface-enhanced Raman spectroscopy scattering from gold-coated ceramic nanopore substrates: effect of nanopore size
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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.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Paul D. Robinson, Aschalew Kassu, Anup Sharma, Tatiana V. Kukhtareva, Carlton W. Farley, Cydale C. Smith, Paul B. Ruffin, Christina L. Brantley, Eugene Edwards, "Surface-enhanced Raman spectroscopy scattering from gold-coated ceramic nanopore substrates: effect of nanopore size," Journal of Nanophotonics 7(1), 073592 (25 April 2013). https://doi.org/10.1117/1.JNP.7.073592 . Submission:
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