kumar:123301

Summary

Measurements of the fluid and particle mobilities in strong electric fields. Anil Kumar, Ezinwa Elele, Mike Yeksel, Boris Khusid, Zhiyong Qiu and Andreas Acrivos. Physics of Fluids, 18(12):123301, 2006. (URL)

Abstract

We present a method for measuring both the fluid and particle velocities in strong electric fields and carefully analyze the repeatability and reproducibility of the measurements. The experiments were conducted in 50-µm capillaries containing dilute aqueous suspensions of 4-µm polystyrene spheres subjected to dc as well as ac (5¿50 Hz) fields of strengths up to 1 and 0.6 kV/cm, respectively. These measurements indicate that the predictions of classical linear theories for electrokinetic phenomena apply well beyond the range of relatively weak electric fields for which these theories were developed. The results of our studies are critical for the quantification of microanalytical systems which make use of electrokinetic phenomena for the transport, control, and manipulation of fluids and particles

Bibtex entry

@ARTICLE { kumar:123301,
    AUTHOR = { Anil Kumar and Ezinwa Elele and Mike Yeksel and Boris Khusid and Zhiyong Qiu and Andreas Acrivos },
    TITLE = { Measurements of the fluid and particle mobilities in strong electric fields },
    YEAR = { 2006 },
    JOURNAL = { Physics of Fluids },
    VOLUME = { 18 },
    NUMBER = { 12 },
    PAGES = { 123301 },
    URL = { http://link.aip.org/link/?PHF/18/123301/1 },
    ABSTRACT = { We present a method for measuring both the fluid and particle velocities in strong electric fields and carefully analyze the repeatability and reproducibility of the measurements. The experiments were conducted in 50-µm capillaries containing dilute aqueous suspensions of 4-µm polystyrene spheres subjected to dc as well as ac (5¿50 Hz) fields of strengths up to 1 and 0.6 kV/cm, respectively. These measurements indicate that the predictions of classical linear theories for electrokinetic phenomena apply well beyond the range of relatively weak electric fields for which these theories were developed. The results of our studies are critical for the quantification of microanalytical systems which make use of electrokinetic phenomena for the transport, control, and manipulation of fluids and particles },
}