Figure 22.

Principle of Varioptic liquid lenses operation based on EWOD principle: (a) the tension is cut off, the rays are divergent, (b) the tension is applied, the rays are focalized [71]. Reprinted with permission from Varioptic

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