Figure 1
From: Effects of wettability on droplet movement in a V-shaped groove
Schematic diagram of droplet movement in different wetting condition. (a) Droplet movement on the hydrophobic surface when Vdrop increases. (Hu = Hu’ < Hu”) (b) Droplet movement on the hydrophobic surface when Vdrop decreases. (Hu = Hu’ > Hu”) (c) A droplet on the hydrophilic surface. In (a,b), the contact angles of the upper and lower meniscus are equal to A + 90° and B + 90° respectively. In (c), the contact angles of the upper and lower meniscus are equal to A and B respectively.
