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摘要翻译：
我们研究了平行光滑硬壁之间的硬球流体的扩散动力学。在局部堆积密度较高的区域，垂直于壁面的位置相关扩散系数较大。高密度区域也有最大的可用体积，与快速的局部扩散性一致。事实上，作为Widom插入概率的函数，局部和全局扩散近似地崩溃在一个主曲线上。平行法向扩散和平均法向扩散在高密度下强烈耦合，并偏离体流体行为。
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英文标题：
《Layering and position-dependent diffusive dynamics of confined fluids》
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作者：
Jeetain Mittal, Thomas M. Truskett, Jeffrey R. Errington, Gerhard
Hummer
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最新提交年份：
2008
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分类信息：
一级分类：Physics 物理学
二级分类：Soft Condensed Matter 软凝聚态物质
分类描述：Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜，聚合物，液晶，玻璃，胶体，颗粒物质
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
We study the diffusive dynamics of a hard-sphere fluid confined between parallel smooth hard walls. The position-dependent diffusion coefficient normal to the walls is larger in regions of high local packing density. High density regions also have the largest available volume, consistent with the fast local diffusivity. Indeed, local and global diffusivities as a function of the Widom insertion probability approximately collapse onto a master curve. Parallel and average normal diffusivities are strongly coupled at high densities and deviate from bulk fluid behavior.
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PDF链接：
https://arxiv.org/pdf/801.0757
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