Many-body hydrodynamic interactions in charge-stabilized suspensions.
Many-body hydrodynamic interactions in charge-stabilized suspensions.
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电荷稳定悬浮液中的多体流体动力学相互作用。
DOI：
10.1103/physrevlett.96.138303
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发表时间：
2006
影响因子：
8.6
通讯作者：
G. Nägele
中科院分区：
文献类型：
--
作者：
A. J. Banchio;J. Gapiński;A. Patkowski;W. Häussler;A. Fluerasu;S. Sacanna;P. Holmqvist;G. Meier;M. Lettinga;G. Nägele
在这项联合实验理论工作中，我们研究了带电胶体球的致密悬浮液中的流体动力学相互作用效应。使用 X 射线光子相关光谱，我们确定了不同范围的电空间斥力的流体动力学函数 H(q)。我们证明，H(q) 可以通过带电布朗球体的新型斯托克斯动力学模拟方法以及对最初由 Beenakker 和 Mazur 开发的多体理论的修改来定量描述。非常重要的是，我们可以解释强相关粒子的 H(q) 行为，而无需诉诸有争议的流体动力学筛选概念，正如 Riese [Phys.莱特牧师。 85, 5460 (2000)]。
In this joint experimental-theoretical work we study hydrodynamic interaction effects in dense suspensions of charged colloidal spheres. Using x-ray photon correlation spectroscopy we have determined the hydrodynamic function H(q), for a varying range of electrosteric repulsion. We show that H(q) can be quantitatively described by means of a novel Stokesian dynamics simulation method for charged Brownian spheres, and by a modification of a many-body theory developed originally by Beenakker and Mazur. Very importantly, we can explain the behavior of H(q) for strongly correlated particles without resorting to the controversial concept of hydrodynamic screening, as was attempted in earlier work by Riese [Phys. Rev. Lett. 85, 5460 (2000)].