Patterned nanoporous gold as an effective SERS template |
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| Authors: | Jiao Yang Ryckman Judson D Ciesielski Peter N Escobar Carlos A Jennings G Kane Weiss Sharon M |
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| Affiliation: | Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, USA. |
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| Abstract: | We demonstrate large area two-dimensional arrays of patterned nanoporous gold for use as easy-to-fabricate, cost-effective, and stable surface enhanced Raman scattering (SERS) templates. Using a simple one-step direct imprinting process, subwavelength nanoporous gold (NPG) gratings are defined by densifying appropriate regions of a NPG film. Both the densified NPG and the two-dimensional grating pattern are shown to contribute to the SERS enhancement. The resulting substrates exhibit uniform SERS enhancement factors of at least 10(7) for a monolayer of adsorbed benzenethiol molecules. |
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