Figure 7
From: Effects of wettability on droplet movement in a V-shaped groove
Droplet movement on hybrid 2 and hydrophobic surface while Vdrop increases. (a) On the hybrid 2 surface, once the droplet reached the superhydrophilic area, the lower meniscus stayed fixed (30~80 s). (b) The lower meniscus continuously moved downwards while Vdrop increased on the hydrophobic surface. In both cases, water was injected at same position. Marked time above images means water injection time. Dashed lines indicate the position of the lower meniscus on the hybrid 1 surfaces after 30 s. Scale bar: 2 mm.
