Localized surface plasmon resonance in graphene nanomesh with Au nanostructures

摘要

A hybrid structure of a graphene nanomesh with the gold nanodisks is studiedto enhance the light absorption by localized surface plasmon resonance. Fromthe reflection spectra of the visible range for graphene nanomesh sampleswithout and with nanodisks, it is found that the absorption of graphenenanomesh structures is greatly enhanced in the presence of gold nanodisksaround the resonance wavelength. Simulation results based on thefinite-difference time-domain method support the experimental observations.This study demonstrates the potential of constructing graphene basedphotodetectors with a high light absorption efficiency and wavelengthselectivity.