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arXiv 1303.0891cond-mat.softcond-mat.stat-mech
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高斯电解质模型的屏蔽特性及其在耗散粒子动力学中的应用

Screening properties of Gaussian electrolyte models, with application to dissipative particle dynamics

Patrick B. Warren, Andrey Vlasov, Lucian Anton, Andrew J. Masters

摘要:

本文通过分析电荷对分布函数的渐近行为,研究了电解质溶液高斯电荷模型的屏蔽性质。我们使用蒙特卡罗模拟与超网状链积分方程封闭,和随机相位近似相结合,建立条件下,屏蔽长度是很好地定义和在何种程度上,它符合预期的德拜长度。对于实际应用,例如在耗散粒子动力学,我们能够总结我们的结果,在简洁的经验法则,可用于介观尺度建模的电解质溶液。因此,我们建立了一个坚实的基础,为今后的工作,如系统地纳入特定的离子效应。

英文摘要:

We investigate the screening properties of Gaussian charge models of electrolyte solutions by analysing the asymptotic behaviour of the pair distribution functions. We use a combination of Monte-Carlo simulations with the hyper-netted chain integral equation closure, and the random phase approximation, to establish the conditions under which a screening length is well defined and the extent to which it matches the expected Debye length. For practical applications, for example in dissipative particle dynamics, we are able to summarise our results in succinct rules-of-thumb which can be used for mesoscale modeling of electrolyte solutions. We thereby establish a solid foundation for future work, such as the systematic incorporation of specific ion effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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