Issue 36, 2020

Dynamics of island-meniscus coalescence in free-standing smectic films

Abstract

In free-standing smectic films islands (regions of larger thickness than the film) can be considered as two-dimensional analogues of liquid droplets in a three-dimensional medium. The dynamics of droplet coalescence is an important but up to now incompletely solved problem in non-equilibrium mechanics. Here, we report on our investigations of island coalescence with the film meniscus. This phenomenon is analogous to the coalescence of a 3D droplet with a flat liquid surface. We found that the time evolution of island dimension is described by universal power-law dependencies for different stages of coalescence. Limited agreement with existing theory was found. In particular, in the final stage of coalescence the domain dynamics differs from theoretical predictions.

Graphical abstract: Dynamics of island-meniscus coalescence in free-standing smectic films

Article information

Article type
Paper
Submitted
01 May 2020
Accepted
29 Jul 2020
First published
25 Aug 2020

Soft Matter, 2020,16, 8506-8511

Dynamics of island-meniscus coalescence in free-standing smectic films

P. V. Dolganov, N. S. Shuravin, V. K. Dolganov and E. I. Kats, Soft Matter, 2020, 16, 8506 DOI: 10.1039/D0SM00791A

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