Comment on "Layering transition in confined molecular thin films: Nucleation and growth"

Nandi, Saroj K (2006) Comment on "Layering transition in confined molecular thin films: Nucleation and growth". In: Physical Review B: Condensed Matter and Material Physics, 74 . 167401:1-167401:4.

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Abstract

When fluid is confined between two molecularly smooth surfaces to a few molecular diameters, it shows a large enhancement of its viscosity. From experiments it seems clear that the fluid is squeezed out layer by layer. A simple solution of the Stokes equation for quasi-two-dimensional confined flow, with the assumption of layer-by-layer flow is found. The results presented here challenge those of Persson and Tosatti [Phys. Rev. B. 50, 5590 (1994)] and show that both the kinematic viscosity of the confined fluid and the coefficient of surface drag can be obtained from the time dependence of the area squeezed out. Fitting our solution to the available experimental data gives a value of viscosity which is approximately seven orders of magnitude higher than that in the bulk.

Item Type:	Journal Article
Publication:	Physical Review B: Condensed Matter and Material Physics
Publisher:	American Physical Society
Additional Information:	Copyright of this article belongs to American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 May 2008
Last Modified:	19 Sep 2010 04:45
URI:	http://eprints.iisc.ac.in/id/eprint/14092

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