Optical Nonlinear Refractive Index of Laser-Ablated Gold Nanoparticles Graphene Oxide Composite

Figure 5

FT-IR spectrum for (a) GO, (b) Au-NPs/GO nanocomposite, (c) GO sheet before the ablation of gold plate, and (d) GO sheet after the ablation of gold target and it shows the Au-NPs decorated the GO sheet.