https://scholars.lib.ntu.edu.tw/handle/123456789/408522
標題: | Dynamic electrophoresis of a spherical dispersion of soft particles subject to a stress-jump condition | 作者: | Min W.-L. Lee E. Hsu J.-P. |
關鍵字: | Dynamic electrophoresis;Soft particles;Spherical dispersion;Stress-jump condition | 公開日期: | 2006 | 卷: | 299 | 期: | 1 | 起(迄)頁: | 464-471 | 來源出版物: | Journal of Colloid and Interface Science | 摘要: | The dynamic mobility of a spherical dispersion of soft particles, where a particle comprises a rigid core and a membrane layer, is evaluated for the case when the shear stress across the membrane layer-liquid interface is discontinuous, the so-called stress-jump condition. We show that, due to the effect of double-layer deformation, the magnitude of the dynamic mobility of a particle has a local maximum and the corresponding phase angle has a negative (phase lead) local minimum at a low to medium level of the frequency of the applied electric field. This effect becomes insignificant if the frequency of the applied electric field is sufficiently high. The stress-jump condition may lead to a significant influence on the drag, and consequently the mobility of a particle. The degree of influence depends upon the sign of the stress-jump coefficient and the charged conditions of the membrane layer of the particle. ? 2006 Elsevier Inc. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408522 | ISSN: | 00219797 | DOI: | 10.1016/j.jcis.2006.01.034 |
顯示於: | 化學工程學系 |
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