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Electrophoresis. 2011 Sep;32(17):2292-7. doi: 10.1002/elps.201100034. Epub 2011 Aug 8.

Dielectrophoretic mobility determination in DC insulator-based dielectrophoresis.

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  • 1Department of Chemistry and Biochemistry, Arizona State University, Tempe 85287-1604, USA.


Insulator-based dielectrophoresis (iDEP) is a powerful tool for separating and characterizing particles, yet it is limited by a lack of quantitative characterizations. Here, this limitation is addressed by employing a method capable of quantifying the DEP mobility of particles. Using streak-based velocimetry the particle properties are deduced from their motion in a microfluidic channel with a constant electric field gradient. From this approach, the DEP mobility of 1 μm polystyrene particles was found to be -2±0.4 10(-8)  cm4 /(V2  s). In the future, such quantitative treatment will allow for the elucidation of unique insights and rational design of devices.

Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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