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arXiv · 1710.05679

Strain Heterogeneity in Sheared Colloids Revealed by Neutron Scattering

Kevin Chen·Bin Wu·Guan-Rong Huang·Gaibo Zhang·Yangyang Wang
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Abstract

Recent computational and theoretical studies have shown that the deformation of colloidal suspensions under a steady shear is highly heterogeneous at the particle level and demonstrate a critical influence on the macroscopic deformation behavior. Despite its relevance to a wide variety of industrial applications of colloidal suspensions, scattering studies focusing on addressing the heterogeneity of the non-equilibrium colloidal structure are scarce thus far. Here, we report the first experimental result using small-angle neutron scattering. From the evolution of strain heterogeneity, we conclude that the shear-induced deformation transforms from nearly affine behavior at low shear rates, to plastic rearrangements when the shear rate is high.

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Kevin Chen, Bin Wu, Guan-Rong Huang, Gaibo Zhang, Yangyang Wang. 2017-10-16. Strain Heterogeneity in Sheared Colloids Revealed by Neutron Scattering. https://doi.org/10.1039/c7cp07197c

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