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Size based separation of microparticles using a dielectrophoretic activated system

Khoshmanesh, Khashayar, Zhang, Chen, Nahavandi, Saeid, Tovar-Lopez, Francisco J., Baratchi, Sara, Mitchell, Arnan and Kalantar-zadeh, Kourosh 2010, Size based separation of microparticles using a dielectrophoretic activated system, Journal of applied physics, vol. 108, no. 3, pp. 1-7.

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Title Size based separation of microparticles using a dielectrophoretic activated system
Author(s) Khoshmanesh, Khashayar
Zhang, Chen
Nahavandi, Saeid
Tovar-Lopez, Francisco J.
Baratchi, Sara
Mitchell, Arnan
Kalantar-zadeh, Kourosh
Journal name Journal of applied physics
Volume number 108
Issue number 3
Start page 1
End page 7
Total pages 8
Publisher American Institute of Physics
Place of publication College Park, Md.
Publication date 2010-08
ISSN 0021-8979
1520-8850
1089-7550
Summary This work describes the separation of polystyrene microparticles suspended in deionized (DI) water according to their dimensions using a dielectrophoretic (DEP) system. The DEP system utilizes curved microelectrodes integrated into a microfluidic system. Microparticles of 1, 6, and 15 μm are applied to the system and their response to the DEP field is studied at different frequencies of 100, 200, and 20 MHz. The microelectrodes act as a DEP barrier for 15 μm particles and retain them at all frequencies whereas the response of 1 and 6 μm particles depend strongly on the applied frequency. At 100 kHz, both particles are trapped by the microelectrodes. However, at 200 kHz, the 1 μm particles are trapped by the microelectrodes while the 6 μm particles are pushed toward the sidewalls. Finally, at 20 MHz, both particles are pushed toward the sidewalls. The experiments show the tunable performance of the system to sort the microparticles of various dimensions in microfluidic systems.
Notes Online Publication Date: 5 August 2010.

The following article appeared in (citation of published article) and may be found at http://dx.doi.org/10.1063/1.3457226

Language eng
Field of Research 091306 Microelectromechanical Systems (MEMS)
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©Copyright 2010, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30031137

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Created: Fri, 12 Nov 2010, 11:41:05 EST by Sandra Dunoon