Pushing or pulling droplets on ZnO nanorods with an UV light

摘要: Water droplets were either pushed or pulled with an UV light on the surface of vertically aligned and superhydrophobic ZnO nanorods (NRs). The contact angle reduce to a lower value due absorption by ZnO NRs and circulating current was observed inside droplet. away from toward to the center depending locations light. It is obvious that in pushing mode, dominate direction movement droplets, while pulling mode, the contact change droplet