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Regensburg 2004 – scientific programme

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DY: Dynamik und Statistische Physik

DY 17: Fluids II

DY 17.2: Talk

Monday, March 8, 2004, 16:45–17:00, H3

Shape transformations of fluid micrustructures induced by electrowetting — •Anke Klingner, Renate Nikopoulos, Juergen Buehrle, Stephan Herminghaus und Frieder Mugele — Universitaet Ulm, Abt. Angewandte Physik, Albert-Einstein-Allee 11, D-89081 Ulm

A growing number of applied sciences as DNA analysis and proteomics are in need of microfluidic devices, which are able to control small amounts of liquid. We used the electrowetting effect in order to manipulate liquid droplets. The droplets were placed either on top of a single substrate with a stripe electrode, or between two substrates with stripe electrodes on each side. We studied systematically the behaviour of the liquid as a function of the applied voltage, the substrate separation, and the relative orientation of opposed stripe electrodes. The experimental results are compared to both a simple analytical model as well as numerical calculations using the Surface Evolver.

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