A model suspension of charged colloidal spheres exhibits anomalous modulus relaxations upon flow cessation from the shear-thickened state. Small angle neutron scattering (SANS) measurements indicate the development of a metastable crystalline state upon flow cessation from a disordered, shear-thickened state. The metastable state consists of a random stacking of tightly packed hcp planes of particles lying in the shear velocity-vorticity plane. These measurements suggest that the apparently disordered shear-thickened state may contain a high degree of latent order not apparent in the SANS measurements during flow.
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Butera et al. (1996) studied this question.
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