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.

Zhejian Cao

Postdoc

My research interests include 2D materials, semiconductor materials, and porous materials.