Mesoscopic simulations of the counterion-induced electro-osmotic flow: a comparative study.
We present mesoscopic simulations of the counterion-induced electro-osmotic flow in different electrostatic coupling regimes. Two simulation methods are compared, dissipative particle dynamics (DPD) and coupled lattice-Boltzmann/molecular dynamics (LB/MD). A general mapping scheme to match DPD to LB/MD is developed. For the weak coupling regime, analytic expressions for the flow profiles in the presence of partial-slip as well as no-slip boundary conditions are derived from the Poisson-Boltzmann and Stokes equations, which are in good agreement with the numerical results. The influence of electrofriction and partial slip on the flow profiles is discussed.
Smiatek
Jens
J
Physics Faculty, Universitat Bielefeld, D-33615 Bielefeld, Germany. smiatek@physik.uni-bielefeld.de
Sega
Marcello
M
Holm
Christian
C
Schiller
Ulf D
UD
Schmid
Friederike
F
D003198:Computer Simulation; D004560:Electricity; D004563:Electrochemistry; D007477:Ions / Q000737:chemistry*; D044085:Microfluidics; D008956:Models, Chemical; D009995:Osmosis
D007477:Ions