https://scholars.lib.ntu.edu.tw/handle/123456789/408508
標題: | Electrophoretic mobility of a spherical particle in a spherical cavity | 作者: | Lee E. Chu J.-W. Hsu J.-P. |
關鍵字: | Boundary effects;Electrophoresis;Spherical cavity;Spherical particle | 公開日期: | 1997 | 卷: | 196 | 期: | 2 | 起(迄)頁: | 316-320 | 來源出版物: | Journal of Colloid and Interface Science | 摘要: | The electrophoretic mobility U of a spherical particle in a spherical cavity for the case of low electric field is estimated for an arbitrary thick electrical double layer. We show that if the particle is uncharged and the cavity negatively charged, the deviation in the mobility based on the linearized Poisson-Boltzmann equation, U(L), can be serious even at a low electrical potential. In this case, the variation of the absolute deviation, |U - U(L)| as a function of £ea, £e and a being, respectively, the reciprocal Debye length and particle radius, has a maximum. The £ea at which the maximal absolute deviation occurs increases with £f (particle size/cavity size), and the maximal absolute deviation decreases with £f. The latter increases with the absolute surface potential of cavity. If the particle is positively charged and the cavity uncharged, U(L) is sufficiently accurate if the electrical potential is low. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408508 | ISSN: | 00219797 | DOI: | 10.1006/jcis.1997.5220 |
顯示於: | 化學工程學系 |
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