17 October 2012 Gold-coated nanoporous substrates for SERS studies
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The Raman signal of inelastically scattered photons represents the fingerprint of a chemical molecule. Therefore, surface enhanced Raman spectroscopy (SERS) can be employed as the selective mechanism for an extraordinary optics sensor sensitive enough to detect a single molecule. Such sensitivity makes SERS ideal to detect chemicals at parts per billion to parts per trillion concentrations. SERS studies benefit from a signal enhancing substrate that is both reproducible and cost effective. Commercial substrates produced by electron beam lithography cost approximately $100 a piece to manufacture and can only be used once. The purpose of this study is to design a SERS substrate that offers enhancement equivalent to the commercial standard and is cheaper to produce. Experiments confirm that gold (Au) coated nano-pores can be used as an optimal SERS substrate offering a promising enhancement with durability that rival commercial products.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. D. Robinson, P. D. Robinson, A. Kassu, A. Kassu, A. Sharma, A. Sharma, T. Kukhtareva, T. Kukhtareva, P. Ruffin, P. Ruffin, C. Brantley, C. Brantley, E. Edwards, E. Edwards, "Gold-coated nanoporous substrates for SERS studies", Proc. SPIE 8465, Nanostructured Thin Films V, 84650P (17 October 2012); doi: 10.1117/12.928788; https://doi.org/10.1117/12.928788

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