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Madou, Mark
BIO-MEMS Lab
Research Interests
  • Medical Diagnostics

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3-D electrode designs for flow-through dielectrophoretic systems

Cited 51 times inthomson ciCited 54 times inthomson ci
Title
3-D electrode designs for flow-through dielectrophoretic systems
Author
Park, BYMadou, Mark
Keywords
3-D electrode design; Dielectrophoresis; Flow-through
Issue Date
200510
Publisher
WILEY-BLACKWELL
Citation
ELECTROPHORESIS, v.26, no.19, pp.3745 - 3757
Abstract
Traditional methods of dielectrophoretic separation using planar microelectrodes have a common problem: the dielectrophoretic force, which is proportional to ∇ E 2, rapidly decays as the distance from the electrodes increases. Recent advances in carbon microelectromechanical systems have allowed researchers to create carbon 3-D structures with relative ease. These developments have opened up new possibilities in the fabrication of complex 3-D shapes. In this paper, the use of 3-D electrode designs for high-throughput dielectrophoretic separation/concentration/filtration systems is investigated. 3-D electrode designs are beneficial because (i) they provide a method of extending the electric field within the fluid. (ii) The 3-D electrodes can be designed so that the velocity field coincides with the electric field distribution. (iii) Novel electrode designs, not based on planar electrodes designs, can be developed and used. The electric field distribution and velocity fields of 3-D electrode designs that are simple extensions of 2-D designs are presented, and two novel electrode designs that are not based on 2-D electrode designs are introduced. Finally, a proof-of-concept experimental device for extraction of nanofibrous carbon from canola oil is demonstrated.
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DOI
http://dx.doi.org/10.1002/elps.200500138
ISSN
0173-0835
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