https://scholars.lib.ntu.edu.tw/handle/123456789/61245
標題: | Dynamic electrophoresis of a sphere in a spherical cavity: arbitrary surface potential | 作者: | Lou, Shih-Han Lee, Eric Lee E. |
關鍵字: | Dynamic mobility;Boundary effect;Sphere in spherical cavity;Arbitrary potential | 公開日期: | 2005 | 出版社: | Taipei:National Taiwan University Dept Chem Engn | 卷: | 285 | 期: | 2 | 起(迄)頁: | 865-871 | 來源出版物: | Journal of Colloid and Interface Science | 摘要: | The boundary effect on the dynamic electrophoretic behavior of a charged entity is examined by considering a sphere in a spherical cavity. The present study extends previous analysis to the case of an arbitrary level of electrical potential where the effect of double-layer distortion can be significant. The governing equations are solved numerically based on a pseudo-spectral method, which is found to be sufficient in solving the corresponding electrophoresis problem when a static electric field is applied. The result of numerical simulation reveals that as the size of a cavity decreases, both the magnitude of the mobility and the inertial force acting on a particle decrease accordingly. Also, while the distortion of the ionic cloud should not be ignored, in general, when the surface potential of a particle is high, its influence on the magnitude and on the phase angle of the mobility is alleviated by the presence of the cavity. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/2006111501275381 | 其他識別: | 246246/2006111501275381 | DOI: | 10.1016/j.jcis.2004.12.013 |
顯示於: | 化學工程學系 |
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