Metal Nanoparticles formed by Direct Deposition on Liquid-crystalline Phospholipid Membrane

Abstract

Silicon oxide nanowires (SiOXNWs) was decorated with 3- to 6-nm-sized Au nanoparticles by direct deposition of Au on the nanowire surface without any surface pretreatment. The nanowire surface was uniformly coated with Au nanoparticles with a density of 2 1012 particles cm2. It was found that the Au nanoparticles grown on the SiOXNWs was much finer in size compared to the Au nanoparticles deposited on a flat SiO2 substrate because of the high curvature of the nanowires and abundant surface defects resulting from the oxygen non-stoichiometry. Moreover, the particle size as well as the particle density can be tuned at will by simply altering the growth condition of the SiOXNWs. The tuning of the Au particle provides an opportunity to tailor the Au nanoparticles for desired applications.