Figure 4
From: Long-range spontaneous droplet self-propulsion on wettability gradient surfaces
Theoretical calculation of the maximal motion displacement of different volume droplets self-propulsion on different stripe length L 2 gradient surfaces with wettability range from 166° to 39.4°, and each pattern density in gradient is 0, 0.33, 0.40, 0.50, 0.59, 0.71 and 0.91, respectively.
