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Issue 12, 2005
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A control method for steering individual particles inside liquid droplets actuated by electrowetting

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Abstract

An algorithm is developed that allows steering of individual particles inside electrowetting systems by control of actuators already present in these systems. Particles are steered by creating time varying flow fields that carry the particles along their desired trajectories. Results are demonstrated using an experimentally validated model developed in ref. . We show that the current UCLA electro-wetting-on-dielectric (EWOD) system contains enough control authority to steer a single particle along arbitrary trajectories and to steer two particles, at once, along simple paths. Particle steering is limited by contact angle saturation and by the small number of actuators that are available to actuate the flow in practical electrowetting systems.

Graphical abstract: A control method for steering individual particles inside liquid droplets actuated by electrowetting

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Publication details

The article was received on 20 Sep 2005, accepted on 10 Oct 2005 and first published on 27 Oct 2005


Article type: Technical Note
DOI: 10.1039/B513373B
Citation: Lab Chip, 2005,5, 1404-1407
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    A control method for steering individual particles inside liquid droplets actuated by electrowetting

    S. Walker and B. Shapiro, Lab Chip, 2005, 5, 1404
    DOI: 10.1039/B513373B

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