Figure 3: Exponential approach to equilibrium of spreading stripes on interdigital electrodes.
From: Voltage-induced spreading and superspreading of liquids
The applied voltages are below the threshold voltage. For clarity, all curves have been offset to pass through the origin. Δθ is the difference between the dynamic contact angle and the equilibrium contact angle at a particular voltage. Data are shown for applied voltages at 10 V intervals between 100 V (asterisks) and 200 V (filled circles). Inset: Test of the predicted dependence θe(V)−7/2 for the time constant in the exponential approach to equilibrium; the solid line has a slope of 7/2.
