Bilayer curling and winding in a viscous fluid

Abstract : Induced spontaneous curvature is a new mechanism of microcapsules bursting by nucleation and growth of a hole surrounded by a curling rim. Here we study the dynamics of curling on a macroscopic scale induced by the elastic curvature of a bilayer of tracing paper and tape after soaking by water. The ribbon which is fully stretched at time t = 0 is immersed in a viscous oil. We observe the winding from the free end and find two regimes: rolling at constant velocity at short times, and a slowdown at long times. We interpret these two regimes by a balance of the elastic driving force and the friction force on the roll.
Type de document :
Article dans une revue
Soft Matter, Royal Society of Chemistry, 2012, 8 (32), pp.8517-8522. 〈10.1039/c2sm25860a〉
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Soumis le : mardi 27 mai 2014 - 21:02:31
Dernière modification le : jeudi 11 janvier 2018 - 06:18:25

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Loic Tadrist, Francoise Brochard-Wyart, Damien Cuvelier. Bilayer curling and winding in a viscous fluid. Soft Matter, Royal Society of Chemistry, 2012, 8 (32), pp.8517-8522. 〈10.1039/c2sm25860a〉. 〈hal-00996500〉

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