title: Patterned nanoporous gold as an effective SERS template.
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.
authors.affiliation: Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, USA.
authors.forename: Yang
authors.initials: Y
authors.lastname: Jiao
authors.forename: Judson D
authors.initials: JD
authors.lastname: Ryckman
authors.forename: Peter N
authors.initials: PN
authors.lastname: Ciesielski
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Escobar
authors.forename: G Kane
authors.initials: GK
authors.lastname: Jennings
authors.forename: Sharon M
authors.initials: SM
authors.lastname: Weiss