Figure 1: Voltage-dependent equilibrium contact angles.
From: Voltage-induced spreading and superspreading of liquids
The closed circles show the advancing equilibrium contact angle viewed perpendicular to the electrodes and measured in the long time limit with a constant amplitude sine wave voltage (10 kHz sine wave r.m.s.) applied to the electrodes. The solid line is a fit of equation (3) to the data below threshold; the deduced threshold voltage for inducing complete wetting is VTh=(230±2) V. Inset: schematic of experimental configuration, top view and side profile view (perpendicular to electrodes) of a droplet at 0 V and 200 V.
