Transient electrohydrodynamic manipulation of particles on the surface of a drop

Document Type

Conference Proceeding

Publication Date

1-1-2016

Abstract

In our previous studies we have shown that particles adsorbed on the surface of a drop can be concentrated at its poles or equator by applying a uniform electric field. This happens even when the applied electric field is uniform; the electric field on the surface of the drop is nonuniform, and so particles adsorbed on the surface are subjected to dielectrophoretic (DEP) forces. In this study, we use leaky dielectric model to model the transient behavior of particles at low electric field frequencies. We show that the frequency of the electric field is an important control parameter that under certain conditions can be used to collect particles at the poles or the equator, and to move them from the poles to the equator. The speed with which particles move on the surface depends on the strength of the electrohydrodynamic flow which diminishes with increasing frequency.

Identifier

85002782158 (Scopus)

ISBN

[9780791850336]

Publication Title

ASME 2016 Heat Transfer Summer Conference Ht 2016 Collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels Microchannels and Minichannels

External Full Text Location

https://doi.org/10.1115/HT2016-1051

Volume

2

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