Nano Archive

3D droplet displacement in microfluidic systems by electrostatic actuation

Roux, Jean-Maxime and Fouillet, Yves and Achard, Jean-Luc (2007) 3D droplet displacement in microfluidic systems by electrostatic actuation. Sensors and Actuators A: Physical, 134 (2). 486 - 493.

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A conducting droplet set on the lower plate of a condenser acquires an electrical charge when subjected to an electrical field. Above a threshold value the electrical force lifts the droplet. If the droplet's charge does not leak away, the droplet moves up to the upper electrode and bounces on it. Coating the upper electrode with a dielectric layer allows the otherwise regular droplet back and forth motion to be controlled. This new idea is applied to a droplet-based microfluidic system which drives droplets by electrowetting on a planar array. In this way additional flexibility is achieved since droplets can be displaced and controlled in the three space dimensions.

Item Type:Article
Uncontrolled Keywords:Microfluidics; Droplet displacement; Electrohydrodynamic
Subjects:Analytical Science > Nanotechnology for sensing and actuating
ID Code:4774
Deposited By:SPI
Deposited On:08 May 2009 09:39
Last Modified:08 May 2009 09:39

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