Petravic Janka, Harrowell Peter
Centre for Vascular Research, The University of New South Wales, Sydney, New South Wales 2052, Australia.
J Chem Phys. 2007 Nov 7;127(17):174706. doi: 10.1063/1.2799186.
We demonstrate that the linear response theory of interface friction presented by Bocquet and Barrat [Phys. Rev. E 49, 3079 (1994)] results in a friction coefficient that is not an intrinsic property of the interface and thus does not correspond to the actual interfacial friction coefficient. We point out that this previous derivation includes an unsubstantiated identification of the velocity field in the nonuniform system with the perturbation applied to the equations of the motion. We present an alternative equilibrium theory of the friction associated with the confined fluid and show how this friction is related to the intrinsic interfacial friction.
我们证明，博凯和巴拉特[《物理评论E》49, 3079 (1994)]提出的界面摩擦线性响应理论得出的摩擦系数并非界面的固有属性，因此并不对应于实际的界面摩擦系数。我们指出，之前的推导包括将非均匀系统中的速度场与应用于运动方程的微扰进行了无根据的等同。我们提出了一种与受限流体相关的摩擦的替代平衡理论，并展示了这种摩擦如何与固有界面摩擦相关。
