Motion of individual Au@Ni@TiO2 micromotors and assembled chains in water and H2O2 solution were investigated by an optical microscope (Carl Zeiss Microscopy GmbH, Germany) equipped with a Zeiss Colibri lamp. The UV light (385 nm, 315mW) was used to experiments. For the directional motion of magnetic assembled chains, magnet was set up for the controlling of the formation and motion.