• In a recent paper on thixotropy of blood and proneness to thrombus formation, Dintenfass stressed four important points. (1) Human blood, normal as well as abnormal, exhibits thixotropy and consequently red cells are aggregated in a reversible manner both in normal and abnormal blood. (2) Viscosity of blood in a few cases of thrombosis and coronary occlusion was found to be up to tenfold grea...

We have studied the flow induced by a macroscopic spherical particle settling in a Laponite suspension that exhibits a yield-stress, thixotropy and shear-thinning. We show that the fluid thixotropy (or aging) induces an increase with time of both the apparent yield stress and shear-thinning properties but also a breaking of the flow fore-aft symmetry predicted in Hershel-Bulkley fluids (yield-s...

Abstract The rheological characterization of a model, nearly ideal thixotropic carbon black suspension first proposed by Dullaert and Mewis (JNNFM 139: 21-30, 2006) is extended to include large amplitude oscillatory shear (LAOS) flow, shear flow reversal, unidirectional LAOS flow (UD-LAOS). We show how this broader data set is useful for validating and improving constitutive models of thixotrop...

The thixotropy of cellulose nanocrystal (CNC) water suspensions is intrinsically dependent on the hierarchical structure suspension. diverse hierarchies that comprise individual CNC nanoparticles and mesophase liquid crystalline domains, chiral nematic structures, contribute selectively to rheological material response. Here, we combine rheology with polarized light imaging (PLI) elucidate thix...

Patients with facial nerve palsy are at risk of developing corneal ulceration because of lagophthalmos (incomplete closure of the affected eyelid). Lagophthalmos could result from thixotropy of the levator palpebrae muscle--that is, the formation of tight crossbridges between the actin and myosin filaments of the muscle fibres causing stiffness of the muscle--rather than from paralysis of the o...