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    Title: Diffusiophoresis of a Charge-Regulated Spherical Particle Normal to Two Parallel Disks
    Authors: Hsu, Jyh-Ping;Liu, Kuan-Liang;Hsu, Wei-Lun;Yeh, Li-Hsien;Tseng, Shiojenn
    Contributors: 淡江大學數學學系
    Keywords: Biological cells;Diffusiophoresis;Double layers;Electrolyte concentration;Fixed Charges;Local maximum;Local minimums;Numerical simulation;Osmotic flow;Parallel disks;Particle surface;Spherical particle;Computer simulation;Disks (machine components);Electrophoresis;Functional groups;Surface properties;Disks (structural components)
    Date: 2010-02
    Issue Date: 2013-06-13 11:26:04 (UTC+8)
    Publisher: Washington, DC: American Chemical Society
    Abstract: The diffusiophoresis of a charge-regulated spherical particle normal to two parallel disks as a response to an applied uniform electrolyte concentration gradient is modeled theoretically. The fixed charge on the particle surface comes from the dissociation/association reactions of the functional groups, yielding a charge-regulated surface, which simulates biological cells. Numerical simulations are conducted to examine the behavior of a particle under various conditions: the parameters considered in the simulation include the thickness of the double layer, the charged conditions on the particle surface, the relative size of the particle, and the particle-disk distance. Because the diffusiophoretic mobility of a particle can be dominated by chemiphoresis, electrophoresis, or osmotic flow, the diffusiophoretic behavior of the particle is complicated. For instance, the diffusiophoretic
    mobility may have two local maximums and a local minimum as the thickness of the double layer varies. This behavior is of practical significance if diffusiophoresis is adopted as a separation operation or as a tool to characterize the surface properties of a particle.
    Relation: Journal of Physical Chemistry B 114(8), pp.2766-2778
    DOI: 10.1021/jp907696t
    Appears in Collections:[數學學系暨研究所] 期刊論文

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