@Article{CiCP-7-3,
author = {},
title = {Stick-Slip Motion of Moving Contact Line on Chemically Patterned Surfaces},
journal = {Communications in Computational Physics},
year = {2010},
volume = {7},
number = {3},
pages = {403--422},
abstract = {<p style="text-align: justify;">Based on our continuum hydrodynamic model for immiscible two-phase
flows at solid surfaces, the stick-slip motion has been predicted for moving contact
line at chemically patterned surfaces [Wang et al., J. Fluid Mech., 605 (2008), pp. 59-78].
In this paper we show that the continuum predictions can be quantitatively verified
by molecular dynamics (MD) simulations. Our MD simulations are carried out for
two immiscible Lennard-Jones fluids confined by two planar solid walls in Poiseuille
flow geometry. In particular, one solid surface is chemically patterned with alternating
stripes. For comparison, the continuum model is numerically solved using material
parameters directly measured in MD simulations. From oscillatory fluid-fluid
interface to intermittent stick-slip motion of moving contact line, we have quantitative
agreement between the continuum and MD results. This agreement is attributed to
the accurate description down to molecular scale by the generalized Navier boundary
condition in our continuum model. Numerical results are also presented for the
relaxational dynamics of fluid-fluid interface, in agreement with a theoretical analysis
based on the Onsager principle of minimum energy dissipation.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.2009.09.042},
url = {https://global-sci.com/article/80987/stick-slip-motion-of-moving-contact-line-on-chemically-patterned-surfaces}
}