Conditions for the existence of a reentrant solid phase in a sheared atomic fluid
- 1 November 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 46 (10), 6731-6734
- https://doi.org/10.1103/physreva.46.6731
Abstract
A nonequilibrium molecular-dynamics method is proposed to simulate the behavior of simple fluids under high shear rates. A thermostat that makes no assumptions regarding the form of the streaming velocity of the fluid is introduced. Simulations are carried out for a Weeks-Chandler-Andersen dense liquid. With the form of the streaming velocity partially or wholly constrained, we find evidence for a reentrant solid or string phase, but the phase disappears if constraints are removed. Small-angle neutron-scattering data from a sheared colloidal suspension are presented. There is no evidence of a steady-state shear-induced structure in the suspension.Keywords
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