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



: Scacchi, A.; Archer, A. J.; Brader, J. M.

Publisher: AMER PHYSICAL SOC

: COLLEGE PK

: 2017

: Physical review E

: PHYSICAL REVIEW E

: PHYS REV E

:  062616

: 96

: 6

: 8

: 2470-0045

: 2470-0053

DOI: https://doi.org/10.1103/PhysRevE.96.062616


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.



Last updated on 2025-27-01 at 19:43