Vol. 13, issue 10, article # 15

Toporkov V. S., Medvedev A. A., Bakirov T. S., Generalov V. M. Dielectrophoretic separation of biological particles. // Atmospheric and oceanic optics. 2000. V. 13. No. 10. P. 895-898.    PDF
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Abstract:

We present a numerical study of biological particles separation, we have proposed earlier, by making use of the force that arises because of particle polarization in an alternating inhomogeneous electric field, when a cell suspension moves along a separating channel. Since particle polarizability depends on the physical and biological properties of particles, dielectrophoresis allows biological particles to be separated from particles of other nature or intact cells from the damaged ones. Electric fields, particle trajectories, and threshold values of the cell polarizability, which serves a criterion for particle separation, are calculated for different values of channel parameters and particle size. A dimensionless criterion of similarity that relates the parameters mentioned above is proposed. This criterion can be used for selecting optimal parameters of the separating channel.