Effect of wettability on droplet impact: Spreading and splashing

Abstract This study experimentally investigates the dynamic behaviors of water droplets over wide ranges of diameters and velocities (200 μm   90°. Furthermore, we put forward a prediction model of droplet splashing threshold, considering the effect of surface wettability, as K/K0 = 1 + αcosθa, which could quantitatively express the effect of surface wettability on water droplet splashing.