Figure 2From: Self-assembly of gold nanoparticles to silver microspheres as highly efficient 3D SERS substratesSEM images of the AgMSs obtained from a typical experiment. (a) Low-magnification SEM image of AgMSs, (b) high-magnification SEM image of an individual AgMS, (c) SEM image of an individual AgMS after cut by vibratome, and (d) XRD pattern of AgMSs.Back to article page