Superhydrophobic surface has been widely used both in industry and household products

and attracted intensive attention by researchers.In the present study

a water droplet impacting a superhydrophobic surface with the static contact angle of 156皐as experimentally studied at Weber number from 8 to 310.For capturing more information about the whole impacting process

a mirror was set underneath the transparent superhydrophobic surface to simultaneously obtain the images of both the top view and bottom view for the droplet impact and its motion in the air after rebounding.The experimental results showed that the advancing and receding angles as well as the velocity of triple-phase contact ring for the extended droplet on the surface

and the motion pattern in the air of the rebounding droplet were significantly affected by the initial velocity of water droplet.When a droplet impacted the superhydrophobic surface with a high velocity

three groups of satellite droplets were generated during the extension and retraction stages

and the coalescence of neighboring droplet fingers was observed to form a new larger droplet finger during the retraction stage.