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首页> 外文期刊>The European physical journal, E. Soft matter >Screened electrostatics of charged particles on a water droplet
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Screened electrostatics of charged particles on a water droplet

机译:筛选带电粒子在水滴上的静电

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We study the electrostatic properties of charged particles trapped at an interface in a water-in-oil microemulsion. The electrostatic potential and the counterion distribution in the water droplet are given in terms of the ratio of the Debye screening length kappa(-1)supercript stop and the droplet radius R. In the limit R -> infinity we recover the well-known results for a flat interface. Finite-size corrections are obtained in terms of the small parameter 1/kappa R. Part of the counterions spread along the interface and form a charged layer of one Debye length thickness. In particular, there is a uniform surface charge contribution. We derive explicit expressions for the electric field, the mobile charge density, and the charge-induced pressure on the interface.
机译:我们研究了油包水微乳状液中界面处捕获的带电粒子的静电性能。水滴中的静电势和抗衡离子的分布以Debye筛分长度kappa(-1)的超临界点与液滴半径R的比值给出。在极限R->无穷大的情况下,我们恢复了众所周知的结果平面接口。根据较小的参数1 / k R获得有限尺寸的校正。部分抗衡离子沿界面扩散,并形成一个德拜长度厚度的带电层。特别地,存在均匀的表面电荷贡献。我们导出了电场,移动电荷密度和界面上电荷感应压力的显式表达式。

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