液体纳米层的力学模型
A mechanical model for liquid nanolayers
摘要：
与固体接触的液体受到分子间力的作用，使液体变得不均匀，并且应力张量不再像均匀块体那样呈球形。这篇文章的目的是表明，一个平方梯度功能表示液体-蒸汽界面自由能校正与液体密度功能在固体表面是一个很好的适应模型来研究固体壁附近的非常薄的纳米膜的结构。这一结果为研究液体在纳米层中的运动提供了可能，并推广了长波假设中的润滑近似。
英文摘要：
Liquids in contact with solids are submitted to intermolecular forces making liquids heterogeneous and stress tensors are not any more spherical as in homogeneous bulks. The aim of this article is to show that a square-gradient functional representing liquid-vapor interface free energy corrected with a liquid density functional at solid surfaces is a well adapted model to study structures of very thin nanofilms near solid walls. This result makes it possible to study the motions of liquids in nanolayers and to generalize the approximation of lubrication in long wave hypothesis.
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