Highly Sensitive and Selectively Deposited Gold Nanoparticles on the Reduced Graphene Oxide for the SERS Application

Abstract

Surface enhanced Raman scattering (SERS) is the enhancement of the Raman signal by several orders of magnitude via the electromagnetic enhancement or the chemical enhancement of metal nanostructures. In addition, graphene also has a Raman enhancement by its novel property that is referred to graphene enhanced Raman scattering (GERS). In this, we combined electromagnetic enhancement of the gold nanoparticles which has a selectivity onto the sp2 carbon surface and the GERS effect of patterned reduced graphene oxide (prGO) for the highly sensitive and stable SERS platform. Our SERS substrate can be applied to the diagnostic SERS device and also enables the selective and dense attachment of metal nanoparticles on the graphene surface.