https://scholars.lib.ntu.edu.tw/handle/123456789/408502
標題: | Sedimentation of a nonconducting sphere in a spherical cavity | 作者: | Lee E. Yen C.-B. Hsu J.-P. |
公開日期: | 2000 | 卷: | 104 | 期: | 29 | 起(迄)頁: | 6815-6820 | 來源出版物: | Journal of Physical Chemistry B | 摘要: | The sedimentation of a nonconducting spherical particle in a spherical cavity is analyzed theoretically. We show that, for the case where the former is positively charged and the latter uncharged, the sedimentation velocity of the particle decreases with £ea, £e and a being respectively the reciprocal Debye length and the radius of a particle. If the surface potential of the particle £p r is high, the sedimentation potential has a local maximum as £ea varies, which becomes inappreciable if the surface potential is low. If £p r is sufficiently high, the sedimentation potential has a local maximum as £f (= radius of particle/radius of cavity) varies. It is not observed, however, if £ea is large. If an uncharged particle is placed in a positively charged cavity, the sedimentation potential may reverse its sign, and may have a local minimum as £ea varies. ? 2000 American Chemical Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408502 | ISSN: | 15206106 |
顯示於: | 化學工程學系 |
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