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Nonspherical armoured bubble vibration

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In this paper, we study the dynamics of cylindrical armoured bubbles excited by mechanical vibrations. A step by step transition from cylindrical to spherical shape is reported as the intensity of the vibration is increased, leading to a reduction of the bubble surface and a dissemination of the excess particles. We demonstrate through energy balance that nonspherical armoured bubbles constitute a metastable state. The vibration instills the activation energy necessary for the bubble to return to its least energetic stable state: a spherical armoured bubble. At this point, particle desorption can only be achieved through higher amplitude of excitation required to overcome capillary retention forces. Nonspherical armoured bubbles open perspectives for tailored localized particle dissemination with limited excitation power.

Graphical abstract: Nonspherical armoured bubble vibration

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The article was received on 15 Jan 2017, accepted on 21 Apr 2017 and first published on 25 Apr 2017

Article type: Paper
DOI: 10.1039/C7SM00097A
Citation: Soft Matter, 2017, Advance Article
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    Nonspherical armoured bubble vibration

    G. Prabhudesai, I. Bihi, F. Zoueshtiagh, J. Jose and M. Baudoin, Soft Matter, 2017, Advance Article , DOI: 10.1039/C7SM00097A

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