keywords Chemistry Chemistry, Physical GAAS GALLIUM-ARSENIDE GOLD LIQUID-SOLID GROWTH MOLECULAR-BEAM EPITAXY Materials Science Materials Science, Coatings & Films NANOWIRE ARRAYS Physical Sciences Physics Physics, Applied Physics, Condensed Matter RAY-PHOTOELECTRON-SPECTROSCOPY SIZE DISTRIBUTIONS SURFACES Science & Technology THIN-FILMS Technology UV/ozone gallium arsenide gold nanoparticles oxidation processes self-assembly