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Updated: May 14, 2026
10:38
Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis
Published on: September 3, 2013
Moving pulsed dielectrophoresis.
Thibault Honegger1, David Peyrade
1LTM-CNRS-UJF, CEA-LETI, 17 av. des Martyrs, 38054 Grenoble, France.
Lab on a Chip
|February 23, 2013
Summary
We developed a novel dielectrophoresis (DEP) method for precise 3D manipulation of suspended beads. This moving pulsed dielectrophoresis (mpuDEP) technique enables contactless, micron-accurate particle displacement in a 2D array.
Area of Science:
- Microfluidics
- Biotechnology
- Electrical Engineering
Background:
- Dielectrophoresis (DEP) is a technique used for manipulating microparticles.
- Existing methods lack precise control for 3D manipulation of beads in suspension.
- Lab-on-a-chip devices offer potential for advanced particle handling.
Purpose of the Study:
- To introduce a novel DEP-based method for fine 3D manipulation of beads.
- To develop a lab-on-a-chip device capable of precise particle handling.
- To demonstrate a generic application of DEP for addressable particle displacement.
Main Methods:
- Utilized a lab-on-a-chip device with layered linear electrodes forming a 53x53 donut trap matrix.
- Introduced pulsed dielectrophoresis (puDEP) to selectively polarize beads at electrode intersections.
- Combined puDEP with moving dielectrophoresis (mDEP) to create moving pulsed dielectrophoresis (mpuDEP).
Main Results:
- Achieved fine 3D manipulation of beads in suspension.
- Demonstrated contactless, micron-accuracy, addressable displacement of single beads.
- Successfully implemented a 2D array manipulation using the mpuDEP technique.
Conclusions:
- The developed mpuDEP method offers precise control over microparticle manipulation.
- This technique has significant potential for applications in biotechnology and microfluidics.
- The lab-on-a-chip device provides a versatile platform for advanced particle handling.
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