Ultrahigh Surface-Enhanced Raman Scattering of Graphene from Au/Graphene/Au Sandwiched Structures with Subnanometer Gap
Abstract
Au/graphene/Au sandwiched plasmonic structures with subnanometer gaps are investigated as ultrasensitive surface-enhanced Raman scattering substrates for graphene and chemical sensing. The subnanomater gaps offer tremendous enhancement in Raman signature of graphene and also chemical molecules, the enhancement mechanism is attributed to the drastic electric field concentration in the subnanometer gaps defined by the graphene template.
Type
Publication
Advanced Optical Materials
