Mesoscopic simulations of the counterion-induced electro-osmotic flow: a comparative study.

نویسندگان

  • Jens Smiatek
  • Marcello Sega
  • Christian Holm
  • Ulf D Schiller
  • Friederike Schmid
چکیده

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.

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عنوان ژورنال:
  • The Journal of chemical physics

دوره 130 24  شماره 

صفحات  -

تاریخ انتشار 2009