Krupenkin and Taylor showed that power can be generated by running the reverse of this process on galinstan. This process actuates the movable focus of Corning’s Varioptic lenses. The energy required for this behavior is minimized when the triple phase line is de-pinned. Gabriel Lippmann devised an electrometer based on observing this behavior for mercury. In a common scheme for digital microfluidics, applying a voltage induces this process, moving samples across a (*) dielectric. Self-cleaning surfaces prevent this transition from a Cassie state to a Wenzel state in the lotus effect. Goniometers measure this behavior as an increase in the spreading parameter, or a decrease in contact angle, when surface tension is reduced. For 10 points, name this process in which a liquid spreads out on a hydrophilic surface. ■END■
ANSWER: wetting [accept wettability; accept electrowetting or EW or electrowetting-on-dielectric or EWOD; accept spreading until read; prompt on capillarity or capillary action or electrocapillarity; prompt on moving or motion; reject “expansion” or “thermal expansion”]
<AS, Chemistry>
= Average correct buzz position