Figure 1
Carin Cain

Figure 1: (a) The experimental setup, with a 50-micron-wide planar gold strip, coated with a silicon oxide film, on the floor of a elastomeric (polydimethylsiloxane-PDMS) microchannel, along which an alternating electric field is applied. (b) Simulation of the two rolls of induced-charge electro-osmotic flow generated above the gold strip, whose velocity along the surface is measured by image correlations observed with particle-image velocimetry (PIV). (Adapted from Ref. [6].)