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From shear thickening to shear-induced jamming
Emanuel Bertrand1, Jerome Bibette, Véronique Schmitt
1Laboratoire Colloïdes et Nanostructures, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
Summary
Applying shear to suspensions can cause thickening or jamming based on particle concentration. A dynamical structural transition explains shear thickening and jamming in non-Brownian particle suspensions.
Area of Science:
- Rheology
- Soft Matter Physics
- Colloid Science
Background:
- Shear-induced phenomena in suspensions are critical for understanding material behavior.
- Non-Brownian particles exhibit complex responses to applied forces.
- The relationship between shear thickening and jamming requires further elucidation.
Purpose of the Study:
- To investigate the dual outcomes of shear application on suspensions: thickening and jamming.
- To elucidate the underlying mechanism of shear thickening in non-Brownian particle suspensions.
- To propose a unified explanation for shear thickening and shear-induced jamming.
Main Methods:
- Experimental measurements of suspension conductivity under shear.
- Analysis of particle volume fraction effects on suspension behavior.
- Theoretical interpretation invoking a dynamical structural transition.
Main Results:
- Suspension behavior (thickening or jamming) is dependent on particle volume fraction.
- Conductivity measurements under shear reveal a dynamical structural transition.
- This transition explains the origin of shear thickening in non-Brownian particle systems.
Conclusions:
- Shear thickening and shear-induced jamming are presented as consequences of a single dynamical structural transition.
- The findings offer a unified perspective on shear-induced phase transitions in suspensions.
- Understanding this transition is key for controlling suspension properties.