Dynamical density functional theory analysis of the laning instability in sheared soft matter

Scacchi, Alberto; Archer, A. J.; Brader, Joseph M.

doi:10.1103/PhysRevE.96.062616

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Journal article

Dynamical density functional theory analysis of the laning instability in sheared soft matter

Scacchi, Alberto Department of Physics, University of Fribourg, Switzerland
Archer, A. J. Department of Mathematical Sciences, Loughborough University, Loughborough United Kingdom
Brader, Joseph M. Department of Physics, University of Fribourg, Switzerland

26.12.2017

Published in:

Physical Review E. - 2017, vol. 96, no. 6, p. 062616

English Using dynamical density functional theory (DDFT) methods we investigate the laning instability of a sheared colloidal suspension. The nonequilibrium ordering at the laning transition is driven by nonaffine particle motion arising from interparticle interactions. Starting from a DDFT which incorporates the nonaffine motion, we perform a linear stability analysis that enables identification of the regions of parameter space where lanes form. We illustrate our general approach by applying it to a simple one- component fluid of soft penetrable particles.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language