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    题名: Diffusiophoresis of a Nonuniformly Charged Sphere in a Narrow Cylindrical Pore
    作者: Hsu, Jyh-Ping;Luu, Xuan-Cuong;Tseng, Shiojenn
    贡献者: 淡江大學數學學系
    日期: 2011-06
    上传时间: 2014-04-22 13:40:20 (UTC+8)
    出版者: Washington, DC: American Chemical Society
    摘要: The influences of the boundary effect and the charged conditions of a particle on its diffusiophoretic behavior are studied by considering the diffusiophoresis of a nonuniformly charged sphere along the axis of a narrow cylindrical pore. We show that the surface charge distribution of the particle is capable of yielding the complicated phenomenon of double-layer polarization and, together with the presence of the pore, leads to profound and interesting diffusiophoretic behaviors. For example, if the electrophoresis effect coming from the difference in the ionic diffusivities is absent, then the diffusiophoretic velocity of a particle with the sign of the surface charge on its middle part different from that on its left- and right-hand parts has both a local maximum and a local minimum as the fraction of the middle varies; that velocity has only a local minimum if the whole particle is charged with the same sign. If the electrophoresis effect is significant, then the diffusiophoretic behavior of the particle depends mainly on its averaged surface charge density.
    關聯: The Journal of Physical Chemistry C 115(25), pp.12592-12603
    DOI: 10.1021/jp200559z
    显示于类别:[數學學系暨研究所] 期刊論文


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