TITLE

Open optoelectrowetting droplet actuation

AUTHOR(S)
han-Sheng CHuang; Kumar, Aloke; Wereley, Steven T.
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p064104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present experimental realization of 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. Basic operations such as transporting and merging were demonstrated. Translational speed up to 3.6 mm/s was measured. Equivalent circuit analysis shows that the operational frequency for the current setup ranges from 100 to 800 Hz.
ACCESSION #
34000005

 

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