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Flow induced crystallisation of penetrable particles
Tekijät: Scacchi, Alberto; Brader, Joseph M.
Kustantaja: IOP PUBLISHING LTD
Kustannuspaikka: BRISTOL
Julkaisuvuosi: 2018
Journal: Journal of Physics: Condensed Matter
Tietokannassa oleva lehden nimi: JOURNAL OF PHYSICS-CONDENSED MATTER
Lehden akronyymi: J PHYS-CONDENS MAT
Artikkelin numero: 095102
Vuosikerta: 30
Numero: 9
Sivujen määrä: 6
ISSN: 0953-8984
eISSN: 1361-648X
DOI: https://doi.org/10.1088/1361-648X/aaaa10
Tiivistelmä
For a system of Brownian particles interacting via a soft exponential potential we investigate the interaction between equilibrium crystallisation and spatially varying shear flow. For thermodynamic state points within the liquid part of the phase diagram, but close to the crystallisation phase boundary, we observe that imposing a Poiseuille flow can induce nonequilibrium crystalline ordering in regions of low shear gradient. The physical mechanism responsible for this phenomenon is shear-induced particle migration, which causes particles to drift preferentially towards the center of the flow channel, thus increasing the local density in the channel center. The method employed is classical dynamical density functional theory.
For a system of Brownian particles interacting via a soft exponential potential we investigate the interaction between equilibrium crystallisation and spatially varying shear flow. For thermodynamic state points within the liquid part of the phase diagram, but close to the crystallisation phase boundary, we observe that imposing a Poiseuille flow can induce nonequilibrium crystalline ordering in regions of low shear gradient. The physical mechanism responsible for this phenomenon is shear-induced particle migration, which causes particles to drift preferentially towards the center of the flow channel, thus increasing the local density in the channel center. The method employed is classical dynamical density functional theory.
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