Fluidity of hydration layers nanoconfined between mica surfaces

被引：190

作者：

Leng, YS ^{[1
]}

Cummings, PT

机构：

[1] Vanderbilt Univ, Dept Chem Engn, Nashville, TN 37235 USA

[2] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.94.026101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We perform molecular dynamics simulations to investigate the shear dynamics of hydration water nanoconfined between two mica surfaces at 1 bar pressure and 298 K. Newtonian plateaus of shear viscosity comparable to the bulk value for different hydration layers D=0.92-2.44 nm are obtained. The origin of this persistent fluidity of the confined aqueous system is found to be closely associated with the rotational dynamics of water molecules, accompanied by fast translational diffusion under this confinement.

引用

页码：1 / 4

页数：4

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