3D Plasmonic Ensembles of Graphene Oxide and Nobel Metal Nanoparticles with Ultrahigh SERS Activity and Sensitivity

Figure 1

(a) High-resolution AFM imaging of single-layered graphene oxide (GO) nanosheets absorbed on a mica substrate. White arrows indicate the stacking of GO layers. (b) The height profile of the AFM image.

(a)

(b)