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, Paul D. Robinson, Aschalew Kassu, Aschalew Kassu, Anup Sharma, Anup Sharma, Tatiana V. Kukhtareva, Tatiana V. Kukhtareva, Carlton W. Farley, Carlton W. Farley, Cydale C. Smith, Cydale C. Smith, Paul B. Ruffin, Paul B. Ruffin, Christina L. Brantley, Christina L. Brantley, Eugene Edwards, 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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