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Article Dans Une Revue Soft Matter Année : 2017

Nonspherical armoured bubble vibration

Résumé

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.
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Dates et versions

hal-01435867 , version 1 (15-01-2017)

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Gaurav Prabhudesai, Ilyesse Bihi, Farzam Zoueshtiagh, Johny Jose, Michael Baudoin. Nonspherical armoured bubble vibration. Soft Matter, 2017, 13 (21), pp.3879-3884. ⟨10.1039/C7SM00097A⟩. ⟨hal-01435867⟩
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