The influence of flow intensity and field frequency on continuous-flow dielectrophoretic trapping

Dana Ben-Bassat; Alicia Boymelgreen; Gilad Yossifon

doi:https://doi.org/10.1016/j.jcis.2014.11.037

The influence of flow intensity and field frequency on continuous-flow dielectrophoretic trapping

Dana Ben-Bassat, Alicia Boymelgreen, Gilad Yossifon

Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

We examine the combined influence of the intensity of pressure driven background flow and the frequency of the applied field on the continuous-flow dielectrophoretic trapping behavior of micro-particles within a micro-channel. Using an embedded interdigitated electrode array, we find that the measured trapping percentage over a continuous frequency range exhibits several curious effects which are strongly dependent on the flow intensity, including an apparent shift of the cross-over frequency and low-frequency dispersion. A numerical and theoretical model accounting for the combined effects of pressure-driven flow, dielectrophoresis and alternating-current electro-osmosis on the equation of motion for the particle is used to qualitatively describe the main experimental results.

Original language	English
Pages (from-to)	154-161
Number of pages	8
Journal	Journal of Colloid and Interface Science
Volume	442
DOIs	https://doi.org/10.1016/j.jcis.2014.11.037
State	Published - 5 Mar 2015

Keywords

Dielectrophoresis
Microfluidics

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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https://doi.org/10.1016/j.jcis.2014.11.037

Cite this

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title = "The influence of flow intensity and field frequency on continuous-flow dielectrophoretic trapping",

abstract = "We examine the combined influence of the intensity of pressure driven background flow and the frequency of the applied field on the continuous-flow dielectrophoretic trapping behavior of micro-particles within a micro-channel. Using an embedded interdigitated electrode array, we find that the measured trapping percentage over a continuous frequency range exhibits several curious effects which are strongly dependent on the flow intensity, including an apparent shift of the cross-over frequency and low-frequency dispersion. A numerical and theoretical model accounting for the combined effects of pressure-driven flow, dielectrophoresis and alternating-current electro-osmosis on the equation of motion for the particle is used to qualitatively describe the main experimental results.",

keywords = "Dielectrophoresis, Microfluidics",

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T1 - The influence of flow intensity and field frequency on continuous-flow dielectrophoretic trapping

AU - Ben-Bassat, Dana

AU - Boymelgreen, Alicia

AU - Yossifon, Gilad

PY - 2015/3/5

Y1 - 2015/3/5

N2 - We examine the combined influence of the intensity of pressure driven background flow and the frequency of the applied field on the continuous-flow dielectrophoretic trapping behavior of micro-particles within a micro-channel. Using an embedded interdigitated electrode array, we find that the measured trapping percentage over a continuous frequency range exhibits several curious effects which are strongly dependent on the flow intensity, including an apparent shift of the cross-over frequency and low-frequency dispersion. A numerical and theoretical model accounting for the combined effects of pressure-driven flow, dielectrophoresis and alternating-current electro-osmosis on the equation of motion for the particle is used to qualitatively describe the main experimental results.

AB - We examine the combined influence of the intensity of pressure driven background flow and the frequency of the applied field on the continuous-flow dielectrophoretic trapping behavior of micro-particles within a micro-channel. Using an embedded interdigitated electrode array, we find that the measured trapping percentage over a continuous frequency range exhibits several curious effects which are strongly dependent on the flow intensity, including an apparent shift of the cross-over frequency and low-frequency dispersion. A numerical and theoretical model accounting for the combined effects of pressure-driven flow, dielectrophoresis and alternating-current electro-osmosis on the equation of motion for the particle is used to qualitatively describe the main experimental results.

KW - Dielectrophoresis

KW - Microfluidics

UR - http://www.scopus.com/inward/record.url?scp=84920287857&partnerID=8YFLogxK

U2 - https://doi.org/10.1016/j.jcis.2014.11.037

DO - https://doi.org/10.1016/j.jcis.2014.11.037

M3 - مقالة

SN - 0021-9797

VL - 442

SP - 154

EP - 161

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

ER -

The influence of flow intensity and field frequency on continuous-flow dielectrophoretic trapping

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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