Open optoelectrowetting droplet actuation device and method

摘要

An open optoelectrowetting (o-OEW) device for liquid droplet manipulations. The o-OEW device is realized by coplanar electrodes and a photoconductor. The local switching effect for electrowetting resulting from illumination is based on the tunable impedance of the photoconductor. Dynamic virtual electrodes are created using projected images, leading to free planar movements of droplets.

主权项

1. An open optoelectrowetting (OEW) device for liquid droplet actuation, comprising:
a substrate; a conductive layer with a plurality of substantially coplanar driving and reference electrodes in an interdigitated alternating pattern on said substrate, said plurality of driving electrodes and said plurality of reference electrodes are arranged in a single row, said plurality of driving electrodes being electrically connected in parallel and said plurality of reference electrodes being electrically connected in parallel for connection to respective terminals of an AC voltage source; a photoconductive layer on said conductive layer; a dielectric layer on said photoconductive layer; and a hydrophobic layer on said dielectric layer.