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Dielectrophoretic mobility determination in DC insulator‐based dielectrophoresis
Author(s) -
Weiss Noah G.,
Jones Paul V.,
Mahanti Prasun,
Chen Kang P.,
Taylor Thomas J.,
Hayes Mark A.
Publication year - 2011
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.201100034
Subject(s) - dielectrophoresis , microfluidics , materials science , insulator (electricity) , nanotechnology , electric field , streak , optoelectronics , physics , optics , quantum mechanics
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 cm 4 /(V 2 s). In the future, such quantitative treatment will allow for the elucidation of unique insights and rational design of devices.