scispace - formally typeset
Search or ask a question
Topic

Surface tension

About: Surface tension is a research topic. Over the lifetime, 25410 publications have been published within this topic receiving 695471 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: The merging of two mercury drops at very low kinetic energy is observed using fast, digital, and analog imaging techniques, and quantitative comparisons with computations of the Navier-Stokes equation with a free surface are made.
Abstract: The merging of two mercury drops at very low kinetic energy is observed using fast, digital, and analog imaging techniques. Sequences showing the time evolution of the overall-surface shape as well as an amplified view of the contact region are shown. Qualitative and quantitative comparisons with computations of the Navier-Stokes equation with a free surface are made. In the model, the surface is tracked by a marker-chain method.

183 citations

Journal ArticleDOI
TL;DR: In this article, a constant normal pressure surface tension algorithm was used to laterally expand and compress the surface area of a dipalmitoylphosphatidylcholine (DPPC) lipid bilayer.
Abstract: A constant normal pressure‐surface tension algorithm for molecular dynamics simulation, developed in the preceding paper, was used to laterally expand and compress the surface area of a dipalmitoylphosphatidylcholine (DPPC) lipid bilayer. Then, from simulations carried out at constant normal pressure and surface area, values of the surface tension and other thermodynamic variables such as the internal energy and system volume were determined at four different values of the surface area per lipid, 60.0, 65.1, 68.1, and 72.1 A2. The surface tension shows dramatic variations with area, going from 6 to 60 dyn/cm at areas per molecule of 65.1 and 68.1 A2, respectively. An approximate thermodynamic analysis indicates that an area of 68.1 A2/lipid is the closest of the four to the free energy minimum for this system, in agreement with experimental measurements. The effect of surface area changes on the calculated deuterium order parameters, which can be compared with those obtained from nuclear magnetic resonanc...

182 citations

Journal ArticleDOI
TL;DR: In this paper, a water-ethanol binary drop of few millimetres size is shown to have a monotonous evolution in the evaporation rate and drop profile with time.

182 citations

Journal ArticleDOI
TL;DR: In this paper, the authors address several conceptual questions that are often encountered when teaching capillarity and provide a perspective that reconciles the macroscopic viewpoints from thermodynamics and fluid mechanics and the microscopic perspective from statistical physics.
Abstract: A paperclip can float on water. Drops of mercury do not spread on a surface. These capillary phenomena are macroscopic manifestations of molecular interactions and can be explained in terms of surface tension. We address several conceptual questions that are often encountered when teaching capillarity and provide a perspective that reconciles the macroscopic viewpoints from thermodynamics and fluid mechanics and the microscopic perspective from statistical physics

182 citations

Journal ArticleDOI
TL;DR: In this paper, the authors show that the variations in size and shape are tightly related to the variation of the electrostatic surface charge density of the particles, which induces a variation of oxide-solution interfacial tension, and, consequently, a decrease of the surface energy.
Abstract: Chemistry in aqueous solution is an easy and versatile method to form nanosized metal oxide particles. Considering our previous results on magnetite Fe3O4, anatase TiO2, brucite Mg(OH)2, and boehmite γ-AlOOH, we show that the strict control of the physicochemical conditions of the precipitation, essentially the acidity and ionic strength in the absence of complexing species, enables the tailoring of the particle size in the range 2–15 nm and, in some cases, of their morphology. We show that the variations in size and/or shape are tightly related to the variation of the electrostatic surface charge density of the particles, which induces a variation of the oxide-solution interfacial tension, and, consequently, a decrease of the surface energy. Such an effect enables the control of the surface area of the system. A semi-quantitative model is presented, which accounts for the effects observed for particles isotropic or anisotropic in shape.

182 citations


Network Information
Related Topics (5)
Adsorption
226.4K papers, 5.9M citations
85% related
Aqueous solution
189.5K papers, 3.4M citations
84% related
Nanoparticle
85.9K papers, 2.6M citations
82% related
Carbon nanotube
109K papers, 3.6M citations
82% related
Oxide
213.4K papers, 3.6M citations
81% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,074
20222,426
2021804
2020816
2019843
2018828