Interparticle attraction controls flow heterogeneity in calcite gels.
basic_science · Level V
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- Record sourced from PubMed, PMID 32926058.
- Also identified by DOI 10.1039/d0sm01079k.
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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.