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Large-scale molecular dynamics simulations are used to simulate a layer of nanoparticles diffusing on the surface of a liquid. Both a low viscosity liquid, represented by Lennard-Jones monomers, and a high viscosity liquid, represented by…

软凝聚态物质 · 物理学 2013-01-10 Shengfeng Cheng , Gary S. Grest

In recent years, there has been a considerable interest in the mechanics of soft objects meeting fluid interfaces (elasto-capillary interactions). In this work we experimentally examine the case of a fluid resting on a thin film of rigid…

软凝聚态物质 · 物理学 2018-04-24 Timothy Twohig , Sylvio May , Andrew B. Croll

Young's law fails on soft solid and liquid substrates where there are substantial deformations near the contact line. On liquid substrates, this is captured by Neumann's classic analysis, which provides a geometrical construction for…

软凝聚态物质 · 物理学 2015-03-13 Robert W. Style , Eric R. Dufresne

We study the flow close to an advancing contact line in the limit of small capillary number. To take into account wetting effects, both long and short-ranged contributions to the disjoining pressure are taken into account. In front of the…

流体动力学 · 物理学 2009-11-11 Jens Eggers

We address semigroup well-posedness for a linear, compressible viscous fluid interacting at its boundary with an elastic plate. We derive the model by linearizing the compressible Navier-Stokes equations about an arbitrary flow state, so…

偏微分方程分析 · 数学 2018-08-17 George Avalos , Pelin Guven Geredeli , Justin T. Webster

On a sufficiently-soft substrate, a resting fluid droplet will cause significant deformation of the substrate. This deformation is driven by a combination of capillary forces at the contact line and the fluid pressure at the solid surface.…

软凝聚态物质 · 物理学 2016-07-07 Aaron Bardall , Karen E. Daniels , Michael Shearer

In this paper, we investigate the dynamics of an incompressible viscous Navier-Stokes fluid evolving above a one-dimensional flat surface. The fluid is subject to a uniform gravitational field and capillary forces acting along the free…

偏微分方程分析 · 数学 2026-02-19 Xiaoding Yang

The motion of a contact line is examined, and comparisons drawn, for a variety of models proposed in the literature. Pressure and stress behaviours at the contact line are examined in the prototype system of quasistatic spreading of a thin…

流体动力学 · 物理学 2014-09-02 David N. Sibley , Andreas Nold , Nikos Savva , Serafim Kalliadasis

In this article, we study the spreading of droplets of density-matched granular suspensions on the surface of a solid. Bidispersity of the particle size distribution enriches the conclusions drawn from monodisperse experiments by…

软凝聚态物质 · 物理学 2023-01-25 Alice Pelosse , Élisabeth Guazzelli , Matthieu Roché

The complicated dynamics of the contact line of a moving droplet on a solid substrate often hamper the efficient modeling of microfluidic systems. In particular, the selection of the effective boundary conditions, specifying the contact…

The evolution of the liquid-vapour interface of a Lennard-Jones fluid is examined with molecular dynamics simulations using the intrinsic sampling method. Results suggest, in agreement with capillary wave theory, clear damping of the…

流体动力学 · 物理学 2022-04-07 Muhammad Rizwanur Rahman , Li Shen , James P. Ewen , Daniele Dini , E. R. Smith

We study experimentally and theoretically the equilibrium adhesive contact between a smooth glass lens and a rough rubber surface textured with spherical microasperities with controlled height and spatial distributions. Measurements of the…

软凝聚态物质 · 物理学 2019-03-26 Vito Acito , Michele Ciavarella , Alexis M Prevost , Antoine Chateauminois

Liquids in contact with solids are submitted to intermolecular forces making liquids heterogeneous and stress tensors are not any more spherical as in homogeneous bulks. The aim of this article is to show that a square-gradient functional…

经典物理 · 物理学 2017-08-23 Henri Gouin

Test area deformations are used to analyse vapour-liquid interfaces of Lennard-Jones particles by molecular dynamics simulation. For planar vapour-liquid interfaces the change in free energy is captured by the average of the corresponding…

软凝聚态物质 · 物理学 2012-11-12 Jose G. Sampayo , Alexandr Malijevsky , Erich A. Muller , E. de Miguel , G. Jackson

We report molecular dynamics simulation results on the equilibrium properties of polymer thin films adsorbed onto flat and curved substrates. We first systematically determine the contact angle of polymer droplets on flat substrates as a…

软凝聚态物质 · 物理学 2023-12-15 Gabriel Catalini , Nicolás A. García , Daniel A. Vega , Arash Nikoubashman

Understanding the physics of a three-phase contact line between gas, liquid, and solid is important for numerous applications. At the macroscale, the three-phase contact line response to an external force action is often characterized by a…

The van der Waals forces across a very thin liquid layer (nanofilm) in contact with a plane solid wall make the liquid nonhomogeneous. The dynamics of such flat liquid nanofilms is studied in isothermal case. The Navier-Stokes equations are…

经典物理 · 物理学 2008-09-23 Henri Gouin , Sergey Gavrilyuk

A macroscopically nominal flat surface is rough at the nanoscale level and consists of nanoasperities. Therefore, the frictional properties of the macroscale-level rough surface are determined by the mechanical behaviors of nanoasperity…

介观与纳米尺度物理 · 物理学 2020-11-05 jianqiao Hu , Hengxu Song , Stefan Sandfeld , Xiaoming Liu , Yueguang Wei

The use of ultra-thin, i.e., monolayer films plays an important role for the emerging field of nano-fluidics. Since the dynamics of such films is governed by the interplay between substrate-fluid and fluid-fluid interactions, the transport…

其他凝聚态物理 · 物理学 2009-11-11 M. N. Popescu , S. Dietrich , G. Oshanin

We perform the analysis of predictions of a classical density functional theory for associating fluids with different association strength concerned with wetting of solid surfaces. The four associating sites water-like models with…

软凝聚态物质 · 物理学 2024-04-01 A. Kozina , M. Aguilar , O. Pizio , S. Sokołowski