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Article Dans Une Revue Soft Matter Année : 2021

Mechanical properties of 2D aggregates of oil droplets as model mono-crystals

Résumé

We investigate the elastic and yielding properties of two dimensional defect-free mono-crystals made of highly monodisperse droplets. Crystals are compressed between two parallel boundaries of which one acts as a force sensor. As the available space between boundaries is reduced, the crystal goes through successive row-reduction transitions. For small compression forces, the crystal responds elastically until a critical force is reached and the assembly fractures in a single catastrophic global event. Correspondingly there is a peak in the force measurement associated with each row-reduction. The elastic properties of ideal mono-crystal samples are fully captured by a simple analytical model consisting of an assembly of individual capillary springs. The yielding properties of the crystal are captured with a minimal bond breaking model.
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Dates et versions

hal-02885201 , version 1 (01-07-2020)

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Jean-Christophe Ono-Dit-Biot, Pierre Soulard, Solomon Barkley, Eric Weeks, Thomas Salez, et al.. Mechanical properties of 2D aggregates of oil droplets as model mono-crystals. Soft Matter, 2021, 17, pp.1194. ⟨10.1039/cXsm00000x/⟩. ⟨hal-02885201⟩
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