Analysis of the dielectrophoretic properties of cells using the isomotive AC electric field

Various microfluidic devices utilizing the principle of dielectrophoresis (DEP) have been developed to separate, concentrate, and characterize biological cells; however, their performance is still limited by a lack of quantitative characterization. We addressed this limitation by employing a method...

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Veröffentlicht in:Biomicrofluidics 2018-07, Vol.12 (4), p.044103-044103
Hauptverfasser: Tada, Shigeru, Omi, Yui, Eguchi, Masanori
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Omi, Yui
Eguchi, Masanori
description Various microfluidic devices utilizing the principle of dielectrophoresis (DEP) have been developed to separate, concentrate, and characterize biological cells; however, their performance is still limited by a lack of quantitative characterization. We addressed this limitation by employing a method capable of accurately quantifying a cell's response to an imposed field gradient. In this study, a simple method using a newly designed Creek-gap electrode was proposed, and the electrokinetic behavior of cells was characterized by DEP velocimetry under the exposure of an approximately constant gradient of electric field square established along the gap of the electrodes. Together with the numerical prediction of the electric field based on three-dimensional electric field analysis, the magnitude of DEP forces and the real part of the Clausius-Mossotti factor of cells were deduced from their movement. Results demonstrated that the proposed method was applicable to the determination of the dielectrophoretic properties of cells.
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subjects Dielectrophoresis
Electric fields
Electrodes
Electrokinetics
Numerical prediction
Regular
Three dimensional analysis
Velocimetry
Velocity measurement
title Analysis of the dielectrophoretic properties of cells using the isomotive AC electric field
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