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Issue 36, 2014
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Gas dissolution in antibubble dynamics

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Abstract

Antibubbles are ephemeral objects. Their lifetime is driven by the slow drainage of the air shell from the bottom to the top of the antibubble under the action of hydrostatic pressure. We show in this paper that this argument is only valid if the water used to make the surfactant mixture is saturated in air. Otherwise, two paths are used by the air, which conduct to the thinning and the eventual collapse of the air shell: the drainage from the bottom to the top of the antibubble and the dissolution of the air into the liquid. Using degassed water dramatically shortens the lifetime of the antibubbles, as observed experimentally and rationalised by time-dependent simulations. Consequently, the antibubble lifetime is not only correlated with physical and chemical properties of the air–liquid interface but also with the gas content of the liquid. We also show that pure gas dissolution does not depend on the antibubble radius, a behaviour that allows to rationalise unexplained experimental data found in literature.

Graphical abstract: Gas dissolution in antibubble dynamics

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Article information


Submitted
02 Apr 2014
Accepted
03 Jun 2014
First published
09 Jun 2014

Soft Matter, 2014,10, 7096-7102
Article type
Paper
Author version available

Gas dissolution in antibubble dynamics

B. Scheid, J. Zawala and S. Dorbolo, Soft Matter, 2014, 10, 7096
DOI: 10.1039/C4SM00718B

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