| Title | Dynamic electrophoresis of a spherical dispersion of soft particles subject to a stress-jump condition. | | Author(s) | Min WL, Lee E, Hsu JP | | Institution | Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan. | | Source | J Colloid Interface Sci 2006 Jul 1; 299(1):464-71. | | Abstract | 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. | | Language | eng | | Pub Type(s) | Journal Article
| | PubMed ID | 16524586 |
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