Structure and Brownian dynamics of the two-dimensional Yukawa fluid
Structure and Brownian dynamics of the two-dimensional Yukawa fluid
复制标题
二维汤川流体的结构和布朗动力学
DOI：
10.1088/0953-8984/4/50/002
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
H. Löwen
中科院分区：
文献类型：
--
作者：
H. Löwen
二维汤川对势代表了两个带电板间带电稳定胶体粒子相互作用的一个简单模型。利用布朗动力学模拟计算了该模型液态的静态和动态相关性。特别地，讨论了对、三重态和取向结构，以及粒子扩散和最近邻取向相关的时间依赖性等动力学量。发现最近邻取向在时间上的衰减是非指数的。它的弛豫发生在一个时间尺度上，这个时间尺度比平动扩散向水动力区交叉的典型时间要大得多。
The two-dimensional Yukawa pair potential represents a simple model for the interaction of charge-stabilized colloidal particles confined between two charged plates. Static and dynamic correlations in the liquid state of this model are calculated using Brownian dynamics simulations. In particular, the pair, triplet and orientational structure are discussed as well as dynamical quantities like particle diffusion and the time-dependence of the nearest-neighbour orientational correlation. It is found that the decay of nearest-neighbour orientation is non-exponential in time. Its relaxation occurs on a time scale that is much larger than a time typical for the crossover of the translational diffusion to the hydrodynamic regime.