Steerable light-driven TiO2-Fe Janus micromotor

The TiO2-Fe Janus micromotor with a single modified metal Fe layer which realizes strong light induced self-electrophorestic propulsion, and the speed can be controlled by adjusting the concentrations of H2O2 fuel or intensities of UV light. Moreover, the direction of the TiO2-Fe Janus micromotor can be efficiently controlled by an external magnetic field. Such a novel concise Janus motor with a simplified preparation process and low cost has a valuable reference for the development of practical micro/nanomotor research.72