Colloidal suspensions contain particles of size typically < 1 μm. These particles are subject to Brownian motion and the particles interact through hydrodynamics. The particles can also be subject to other interparticle forces (repulsion or attraction), be hard-spheres or soft particles. The microstructure formed in a suspension under shear flow depends on the strength of the shear rate and the forces present in the system, and this microstructure has a non-trivial relationship to the macroscopic stress in the suspension. Research in this field is being undertaken by the group on several fronts including oscillatory simulations, experimental rheological characterizations and shear thickening systems.
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