Abstract
Molecular dynamics simulations have been performed for two immiscible fluids confined in a slit pore. It is observed that in the regime of complete wetting, the wetting fluid spreads at the solid surface through a penetrating monomolecular layer intercalated between the solid wall and the nonwetting fluid. In particular, the penetration length of this monolayer increases as L ( t ) ∼ t . Therefore, the monolayer spreading observed for the confined immiscible (simple) fluids is very similar to the terraced spreading observed for nonvolatile polymeric liquids. We propose a simple model to explain the diffusive manner of monolayer spreading, taking into account the capillary driving force and the interfacial dissipation caused by the slipping of monolayer at the solid surface. The diffusive behavior of L ( t ) is recovered and the value for the diffusion coefficient is evaluated, in semi-quantitative agreement with our observation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
