Gas Enrichment at Liquid-Wall Interfaces

Abstract

Molecular dynamics simulations of Lennard-Jones systems are performed to study the effects of dissolved gas on liquid-wall and liquid-gas interfaces. Gas enrichment at walls is observed which for hydrophobic walls can exceed more than two orders of magnitude when compared to the gas density in the bulk liquid. As a consequence, the liquid structure close to the wall is considerably modified, leading to an enhanced wall slip. At liquid-gas interfaces gas enrichment is found which reduces the surface tension.

main changes compared to version 1: flow simulations are included as well as different types of gases

References in corpus (3)

• Dynamics of simple liquids at heterogeneous surfaces : Molecular Dynamics simulations and hydrodynamic description
• Boundary slip as a result of a prewetting transition
• Surface critical behavior of fluids: Lennard-Jones fluid near weakly attractive substrate

Cited by in corpus (23)

• Dynamic equilibrium Mechanism for Surface Nanobubble Stabilization
• Origin of line tension for a Lennard-Jones nanodroplet
• Wetting, roughness and flow boundary conditions
• Knudsen gas provides nanobubble stability
• Surface bubble nucleation phase space
• Electro-hydrodynamics near Hydrophobic Surfaces
• Formation of surface nanobubbles and universality of their contact angles: A molecular dynamics approach
• Stability of Surface Nanobubbles: A Molecular Dynamics Study
• A microscopic view on contact angle selection
• Switchable friction enabled by nanoscale self-assembly on graphene
• Surface nanobubbles as a function of gas type
• Effective velocity boundary condition at a mixed slip surface
• Surface Nanobubbles: Theory, Simulation, and Experiment. A Review
• Hydraulic Transport Across Hydrophilic and Hydrophobic Nanopores: Flow Experiments with Water and n-Hexane
• Imbibition in mesoporous silica: rheological concepts and experiments on water and a liquid crystal
• Effect of Impurities in Description of Surface Nanobubbles
• Charging of dielectric surfaces in contact with aqueous electrolyte -- the influence of CO${}_2$
• Ripple morphology of graphitic surfaces: a comparison between few-layer graphene and HOPG
• Brushes of semiflexible polymers in equilibrium and under flow in super-hydrophobic regime
• Evidence of Epitaxial Growth of Molecular Layers of Dissolved Gas at a Hydrophobic/Water Interface
• Hydrophobic repulsion and its origin
• Line tension from dual-geometry sessile droplet measurements: Combining contact-angle size-dependence data for axisymmetric and cylindrical droplets to determine the line tension
• Nanoscale Surfactant Transport: Bridging Molecular and Continuum Models