Spreading Dynamics of Polymer Nanodroplets

The spreading of polymer droplets is studied using molecular dynamics simulations. To study the dynamics of both the precursor foot and the bulk droplet, large drops of ~200,000 monomers are simulated using a bead-spring model for polymers of chain length 10, 20, and 40 monomers per chain. We compare spreading on flat and atomistic surfaces, chain length effects, and different applications of the Langevin and dissipative particle dynamics thermostats. We find diffusive behavior for the precursor foot and good agreement with the molecular kinetic model of droplet spreading using both flat and atomistic surfaces. Despite the large system size and long simulation time relative to previous simulations, we find no evidence of hydrodynamic behavior in the spreading droplet.Comment: Physical Review E 11 pages 10 figure

Generalized-Newtonian fluid transport by an instability-driven filament

202306 bckwOthersMACBION project, the Excellence Initiative of Aix-Marseille University A*MIDEX (a French Investissements d’Avenir programme) ; the SINUMER project of the French National Research Agency (grant number ANR-18-CE45-0009-01)Published6 month

An immersed boundary method for imposing solid wall condition in lattice Boltzmann model for single and multi-component fluid flows

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Numerical study of the generation of metachronal waves in layers of beating cilia using a Lattice Boltzmann method

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