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Continuous separation of colloidal particles using dielectrophoresis

Continuous separation of colloidal particles using dielectrophoresis
Continuous separation of colloidal particles using dielectrophoresis
Dielectrophoresis is the movement of particles in nonuniform electric fields and has been of interest for application to manipulation and separation at and below the microscale. This technique has the advantages of being noninvasive, nondestructive, and noncontact, with the movement of particle achieved by means of electric fields generated by miniaturized electrodes and microfluidic systems. Although the majority of applications have been above the microscale, there is increasing interest in application to colloidal particles around a micron and smaller. This paper begins with a review of colloidal and nanoscale dielectrophoresis with specific attention paid to separation applications. An innovative design of integrated microelectrode array and its application to flow-through, continuous separation of colloidal particles is then presented. The details of the angled chevron microelectrode array and the test microfluidic system are then discussed. The variation in device operation with applied signal voltage is presented and discussed in terms of separation efficiency, demonstrating 99.9% separation of a mixture of colloidal latex spheres
0173-0835
969-978
Yunus, Nurul
8f9cbca2-b705-44a1-abb3-d0e7e8b483d6
Nili, Hossein
ced86ec9-18eb-4305-9b62-67a97589e768
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Yunus, Nurul
8f9cbca2-b705-44a1-abb3-d0e7e8b483d6
Nili, Hossein
ced86ec9-18eb-4305-9b62-67a97589e768
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581

Yunus, Nurul, Nili, Hossein and Green, Nicolas G (2013) Continuous separation of colloidal particles using dielectrophoresis. Electrophoresis, 34 (7), 969-978. (doi:10.1002/elps.201200466).

Record type: Article

Abstract

Dielectrophoresis is the movement of particles in nonuniform electric fields and has been of interest for application to manipulation and separation at and below the microscale. This technique has the advantages of being noninvasive, nondestructive, and noncontact, with the movement of particle achieved by means of electric fields generated by miniaturized electrodes and microfluidic systems. Although the majority of applications have been above the microscale, there is increasing interest in application to colloidal particles around a micron and smaller. This paper begins with a review of colloidal and nanoscale dielectrophoresis with specific attention paid to separation applications. An innovative design of integrated microelectrode array and its application to flow-through, continuous separation of colloidal particles is then presented. The details of the angled chevron microelectrode array and the test microfluidic system are then discussed. The variation in device operation with applied signal voltage is presented and discussed in terms of separation efficiency, demonstrating 99.9% separation of a mixture of colloidal latex spheres

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Published date: 11 March 2013
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 372429
URI: http://eprints.soton.ac.uk/id/eprint/372429
ISSN: 0173-0835
PURE UUID: ea1f50f0-f5ed-449b-839f-cecc8127c875
ORCID for Nicolas G Green: ORCID iD orcid.org/0000-0001-9230-4455

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Date deposited: 03 Dec 2014 13:34
Last modified: 19 Nov 2019 01:47

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