| Issue |
Europhys. Lett.
Volume 74, Number 4, May 2006
|
|
|---|---|---|
| Page(s) | 623 - 629 | |
| Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
| DOI | https://doi.org/10.1209/epl/i2005-10569-0 | |
| Published online | 12 April 2006 | |
Control of electrostatic particle-particle interactions in dielectrophoresis
Department of Mechanical Engineering, New Jersey Institute of Technology University Heights, Newark, NJ 07102, USA
Received:
27
June
2005
Accepted:
16
March
2006
In a nonuniform electric field, the particles of a suspension experience both a dielectrophoretic (DEP) force and electrostatic particle-particle forces. In applications which require that the particles be manipulated individually the latter forces are not desirable. It is shown numerically that the ratio of the particle-particle and DEP forces decreases with increasing particle size and increasing gap between the particles, and its variation with the Clausius-Mossotti factor becomes increasingly nonlinear with decreasing particle size.
PACS: 41.20.Cv – Electrostatics; Poisson and Laplace equations, boundary-value problems / 47.61.Fg – Flows in micro-electromechanical systems (MEMS) and nano-electromechanical systems (NEMS)
© EDP Sciences, 2006
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