Figure 13.

The operation concept of SWIM: (a) at initial state, the droplet merely contacts the higher posts and (b) at actuated state, the droplet will contact with both the higher and lower posts. Reprinted with permission from [39]. Copyright 2007 Institute of Physics

Verplanck et al. Nanoscale Research Letters 2007 2:577-596   doi:10.1007/s11671-007-9102-4