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  • Electrokinetic movement of the microparticulates between high resistance microelectrodes under the influence of dielectrophoretic force
Title: Electrokinetic movement of the microparticulates between high resistance microelectrodes under the influence of dielectrophoretic force
Dielectrophoresis is a force applied to microparticles in non-uniform electric field. The presented study discusses the fabrication of the glassy carbon interdigitated microelectrode arrays using lithography process based on lithographic patterning and subsequent pyrolysis of negative SU-8 photoresist. Resulting high resistance electrodes would have the regions of high electric field at the ends of microarray as demonstrated by simulation. The study demonstrates that combining the AC applied bias with the DC offset allows the user to separate sub-populations of microparticulates and control the propulsion of microparticles to the high field areas such as the ends of the electrode array. The direction of the movement of the particles can be switched by changing the offset. The demonstrated novel integrated DEP separation and propulsion can be applied to various fields including in-vitro diagnostics as well as to microassembly technologies.  more » « less
Award ID(s):
1661877
PAR ID:
10110017
Author(s) / Creator(s):
; ; ; ;
Date Published:
Journal Name:
Proceedings of the World Congress of Micro- and NanoManufacturing
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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