Abstract
This paper describes a control system for realtime interactive manipulation of microparticles using optoelectronic tweezers(OET) on a liquid crystal display. The OET is a powerful tool for trapping and manipulation of microparticles <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">via</i> image-induced dielectrophoresis (DEP). We develop a new control system for the real-time interactive manipulation of microparticles using OET. Our control system is successfully demonstrated to the real-time interactive manipulation of 75 μm polystyrene beads using a liquid crystal display. The velocity of 75 μm polystyrene particle is measured to be 25 μm/s. The microparticles trapped by a virtual DEP cage are formed a single particle array within only a few minutes. This interactive OET system can be utilized to several biological and medical applications including cell patterning and bead-based protein assays.
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