Capillary levelling of a cylindrical hole in a viscous film

被引：32

作者：

Backholm, Matilda ^{[1
,2
]}

Benzaquen, Michael ^{[3
]}

Salez, Thomas ^{[3
]}

Raphael, Elie ^{[3
]}

Dalnoki-Veress, Kari ^{[1
,2
,3
]}

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[2] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada

[3] ESPCI, UMR CNRS Gulliver 7083, Lab Physicochim Theor, F-75005 Paris, France

来源：

SOFT MATTER | 2014年 / 10卷 / 15期

基金：

加拿大自然科学与工程研究理事会;

关键词：

THIN-FILM; POLYMER MELTS; DYNAMICS; SLIPPAGE; GROWTH;

D O I：

10.1039/c3sm52940a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The capillary levelling of cylindrical holes in viscous polystyrene films was studied using atomic force microscopy as well as quantitative analytical scaling arguments based on thin film theory and self-similarity. The relaxation of the holes was shown to consist of two different time regimes: an early regime where opposing sides of the hole do not interact, and a late regime where the hole is filling up. For the latter, the self-similar asymptotic profile was derived analytically and shown to be in excellent agreement with experimental data. Finally, a binary system of two holes in close proximity was investigated where the individual holes fill up at early times and coalesce at longer times.

引用

页码：2550 / 2558

页数：9

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