Figure 4
From: Path-programmable water droplet manipulations on an adhesion controlled superhydrophobic surface
Dynamic water adhesion force changes for the manipulation of droplet motions on the PDMS substrate with micro-pillar arrays.
(a) The force-distance curves for the PDMS substrate contacted with a water droplet. (b) Relationship between Fadh and εdist on the PDMS substrate. Fadh is decreased as εdist is increased. (c) Schematic illustration of the forces on the surface of a dimple structure that affect water droplet motions (left) and time-sequential photographic images of a moving water droplet on the PDMS substrate via the tunable dimple structure (right). Scale bar, 3 mm.
