Combined field-induced dielectrophoresis and phase separation for manipulating particles in microfluidics

Authors

Dawn J. Bennett, New Jersey Institute of Technology
Boris Khusid, New Jersey Institute of Technology
Conrad D. James, Sandia National Laboratories, New Mexico
Paul C. Galambos, Sandia National Laboratories, New Mexico
Murat Okandan, Sandia National Laboratories, New Mexico
David Jacqmin, NASA Glenn Research Center
Andreas Acrivos, City College of New York

Document Type

Article

Publication Date

12-8-2003

Abstract

The manipulation of particles in microfluidics by the use of combined field-induced dielectrophoresis and phase separation was investigated. The flowing suspensions were found to undergo a phase separation and to form a distinct front between regions enriched with and depleted of particles under the action of a high-gradient ac field and shear. This many-body phenomenon originating from interparticle electrical interactions was demonstrated to provide a method for concentrating particles in a focused region and for separating biological and nonbiological materials. An electrohydrodynamic model was used to describe the evolution of the particle patterns.

Identifier

0347567358 (Scopus)

Publication Title

Applied Physics Letters

External Full Text Location

https://doi.org/10.1063/1.1629789

ISSN

00036951

First Page

4866

Last Page

4868

Issue

23

Volume

83

Recommended Citation

Bennett, Dawn J.; Khusid, Boris; James, Conrad D.; Galambos, Paul C.; Okandan, Murat; Jacqmin, David; and Acrivos, Andreas, "Combined field-induced dielectrophoresis and phase separation for manipulating particles in microfluidics" (2003). Faculty Publications. 13789.
https://digitalcommons.njit.edu/fac_pubs/13789