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Issue 15, 2014
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Capillary levelling of a cylindrical hole in a viscous film

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Abstract

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.

Graphical abstract: Capillary levelling of a cylindrical hole in a viscous film

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Publication details

The article was received on 21 Nov 2013, accepted on 23 Jan 2014 and first published on 27 Jan 2014


Article type: Paper
DOI: 10.1039/C3SM52940A
Citation: Soft Matter, 2014,10, 2550-2558
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    Capillary levelling of a cylindrical hole in a viscous film

    M. Backholm, M. Benzaquen, T. Salez, E. Raphaël and K. Dalnoki-Veress, Soft Matter, 2014, 10, 2550
    DOI: 10.1039/C3SM52940A

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