Droplet trapping and control on a single EWOD surface

Electrowetting droplet trap Two electrodes separated by a small gap provide an electrically tunable pinning center for droplets sliding down an inclined plane. At low voltages the droplets can pass the trap, above a certain critical voltage UC (that increases with the inclination angle α) the droplets get trapped. In this work, we investigate the critical conditions for trapping of drops. U α g