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Some considerations on the dielectrophoretic manipulation of nanoparticles in fluid media

M. LUNGU1, A. NECULAE1, M. BUNOIU1

Affiliation

  1. West University of Timisoara, Faculty of Physics, 4 V. Parvan, 300223 Timisoara, Romania

Abstract

The manipulation of nanoparticles is becoming an important issue as they are massively generated in combustion or material synthesis processes are highly toxic to human health because they can readily enter the human body through inhalation and their toxicity is relatively high. Therefore, their filtration represents an important technological challenge, which makes the object of a very active research. In many scientific and technical areas, a considerable interest is also shown to the separation of nanoparticles in accordance with their physical or chemical characteristics using dielectrophoresis. Dielectrophoretic (DEP) force is exerted when a neutral particle is polarized in a non-uniform electric field, and depends on the dielectric properties of the particle and the suspending medium. This paper investigates the behavior of a suspension of nanometric particles under the action of DEP force. A theoretical model is proposed and a set of numerical results is provided. In particular, the trajectories required to achieve a steady-state pattern are theoretically modeled and computed for a planar electrode array configuration..

Keywords

Nanometric particles, Suspension, Separation, Dielectrophoresis, Numerical simulation.

Submitted at: Oct. 31, 2010
Accepted at: Nov. 25, 2010

Citation

M. LUNGU, A. NECULAE, M. BUNOIU, Some considerations on the dielectrophoretic manipulation of nanoparticles in fluid media, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 12, pp. 2423-2426 (2010)