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Surface tension
About: Surface tension is a research topic. Over the lifetime, 25410 publications have been published within this topic receiving 695471 citations.
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01 Jan 2006
TL;DR: In this article, the authors introduce surfaces and interfaces and the potential energy of interaction between particles and surfaces, and determine surface tension at pure liquid and solution surfaces/interfaces, including solids.
Abstract: PART I. Principles. . 1. Introduction to surfaces and interfaces. 2. Molecular interactions. 3. Thermodynamics of interfaces. PART II. Liquids. 4. Pure liquid surfaces. 5. Liquid solution surfaces. 6. Experimental determination of surface tension at pure liquid and solution surfaces/interfaces. 7. Potential energy of interaction between particles and surfaces. PART III. Solids. 8. Solid surfaces. 9. Contact angle of liquid drops on solids. 10. Some applications involving solid/liquid interfaces
342 citations
TL;DR: In this paper, statistical ensembles for simulating liquid interfaces at constant pressure and/or surface tension are examined, and equations of motion for molecular dynamics are obtained by various extensions of the Andersen extended system approach.
Abstract: Statistical ensembles for simulating liquid interfaces at constant pressure and/or surface tension are examined, and equations of motion for molecular dynamics are obtained by various extensions of the Andersen extended system approach. Valid ensembles include: constant normal pressure and surface area; constant tangential pressure and length normal to the interface; constant volume and surface tension; and constant normal pressure and surface tension. Simulations at 293 K and 1 atm normal pressure show consistent results with each other and with a simulation carried out at constant volume and energy. Calculated surface tensions for octane/water (61.5 dyn/cm), octane/vacuum (20.4 dyn/cm) and water/vacuum (70.2 dyn/cm) are in very good agreement with experiment (51.6, 21.7, and 72.8 dyn/cm, respectively). The practical consequences of simulating with two other approaches commonly used for isotropic systems are demonstrated on octane/water: applying equal normal and tangential pressures leads to an instabil...
340 citations
TL;DR: In this article, the spreading of Newtonian liquid drops after impact with a solid surface is reproted for a range of liquid and surface proeprties, drop diameters, and impact velocities.
Abstract: The spreading of Newtonian liquid drops after impact with a solid surface is reproted for a range of liquid and surface proeprties, drop diameters, and impact velocities. Results for liquid viscosities up to 300 mPa.s are given. For a given drop diameter and velocity, a range of liquid viscosities result in splashing even for smooth surfaces. The maximum spread radius, made dimensionless with the drop radius, is correlated as Rmax* = 0.61(Re2Oh)0.166, where Re and Oh are the Reynolds and Ohnesorge numbers. respectively. A model is proposed to account for inertial, viscous, and surface tension forces on the maximum spread radius. Good agreement is found between the model and experimental data from several sources.
340 citations
TL;DR: It is found that on a given surface a wide range of liquids gave a unique value of reduced hysteresis, which apparently represents an intrinsic parameter describing liquid-solid interactions.
338 citations
TL;DR: In this paper, the experimental results on the effects of a magnetic field on water are reported, and the correlation time τ c was calculated in terms of spin-lattice relaxation time of proton NMR, which verified that the rotational motions got slow down after magnetic treatments.
336 citations