Figure 2
From: Controlled droplet transport to target on a high adhesion surface with multi-gradients
(a) The droplet movement behaviour on the graphite plates with different wedge-patterns. (b) The analysis of forces acted on the droplet, i.e., cooperation of the three driving force: wettable gradient force (Fwg), Laplace pressure force (FL) and wettability different force (Fwd). The scale bar is 3 mm.
