Highly sensitive surface-enhanced Raman scattering based on multi-dimensional plasmonic coupling in Au–graphene–Ag hybrids†
Abstract
We report an efficient surface-enhanced Raman scattering (SERS) substrate by utilizing the multi-dimensional plasmonic coupling in Au nanoparticle (NP)–graphene–Ag NP hybrid structures. An ultrasensitive SERS detection with a limit of down to 10−13 M has been achieved when the sandwiched hybrid film is fabricated on an Ag substrate.