Formation of Gold Nanoprisms on Atomically Flat Mica Surface

A numerous methods are being used for synthesis of gold nanoparticles (NPs) in liquid media, in micelles and at different interfaces. The size and geometry of NPs depend on parameters of synthesis. Here we propose the growth of Au NPs on atomically flat mica surfaces. In such conditions the monocrystalline and isotropic NPs are being simultaneously formed on the surface. We have determined the parameters of synthesis at which preferential formation of monocrystalline prism-like nanoparticles (NPRs) is being realized. The percentage of NPRs with triangular and hexagonal habit depends on the surface conditions, in particular, on wettability of the surface. We demonstrate that the size and morphology of grown NPs can be controlled by components of growth medium and parameters of synthesis.