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.
T. Liberto, M. Le Merrer, S. Manneville and C. Barentin, Soft Matter, 2020, 16, 9217 DOI: 10.1039/D0SM01079K
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