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Interparticle attraction controls flow heterogeneity in calcite gels

Abstract : We couple rheometry and ultrasonic velocimetry to study experimentally the flow behavior of gels of colloidal calcite particles dispersed in water, while tuning the strength of the interparticle attraction through physico-chemistry. We unveil, for the first time in a colloidal gel, a direct connection between attractive interactions and the occurrence of shear bands, as well as stress fluctuations. This generalizes previous results on dense, jammed systems like emulsions
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https://hal.archives-ouvertes.fr/hal-02974117
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Submitted on : Wednesday, October 21, 2020 - 3:45:32 PM
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Long-term archiving on: : Friday, January 22, 2021 - 6:51:39 PM

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Teresa Liberto, Marie Le Merrer, Sébastien Manneville, Catherine Barentin. Interparticle attraction controls flow heterogeneity in calcite gels. Soft Matter, Royal Society of Chemistry, 2020, 16 (40), pp.9217-9229. ⟨10.1039/D0SM01079K⟩. ⟨hal-02974117⟩

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