Results 251 to 260 of about 2,587,535 (290)
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Interpretation of contact angle hysteresis
Journal of Adhesion Science and Technology, 1993Hysteresis of the contact angle, i.e. the difference between the advancing and receding contact angles, is discussed in terms of the liquid film presence behind the drop when it has receded. It is shown that values of receding contact angles in many systems result from a well-defined free energy balance in the solid/liquid drop system. If a duplex film
Emil Chibowski +1 more
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A model for contact angle hysteresis
The Journal of Chemical Physics, 1984We discuss the behavior of a liquid partially wetting a solid surface, when the contact angle at equilibrium θ0 is small, but finite. The solid is assumed to be either flat, but chemically heterogeneous (this in turn modulating the interfacial tensions), or rough.
Joanny, J.-F., Gennes, P. G.
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A Thermodynamic Model for Contact Angle Hysteresis
Journal of Colloid and Interface Science, 1998Thermodynamic expressions for the free energy of contact angle hysteresis have been derived assuming that wetting can be modeled as an adsorption-desorption process. The cause of hysteresis is not specified; it could be due to surface imperfections or simply irreversible interaction of the contact liquid and solid.
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Contact Angle Hysteresis on Solid Crystalline Surfaces
Colloid Journal, 2023The article presents the results of experimental studying the hysteresis of water contact angles at crystalline surfaces. Receding and advancing contact angles and their hysteresis at hydrophilic and hydrophobic substrates with different surface structures (silica, mica, and calcite) have been studied under the action of an external pressure applied to
N. E. ESIPOVA +2 more
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Contact Angle Hysteresis on Aquagels
AIChE/SPE Joint Symposium on Wetting and Capillarity in Fluid Displacement Processes, 1959AIChE-SPE Joint Symposium on Wetting and Capillarity in Fluid Displacement Processes, 17–20 May, Kansas City, Missouri Summary Micrographic studies of drops of methylene iodide on agar aqua gel surfaces reveal substantial contact - angle hysteresis, which is virtually independent of agar concentration.
A.S. Michaels, R.C. Lummis
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On the interpretation of contact angle hysteresis
Journal of Adhesion Science and Technology, 2002The determination of solid surface free energy is still an open problem. The method proposed by van Oss and coworkers gives scattered values for apolar Lifshitz-van der Waals and polar (Lewis acid-base) electron-donor and electron-acceptor components for the investigated solid. The values of the components depend on the kind of three probe liquids used
Emil Chibowski +2 more
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A new model for the formation of contact angle and contact angle hysteresis
Chinese Physics B, 2010The formation mechanism of the contact angle and the sliding angle for a liquid drop on a solid surface plays an important role in producing hydrophobic surfaces. A new half soakage model is established in this paper as a substitute for Wenzel (complete soakage) and Cassie (no soakage) models.
Gong Mao-Gang +2 more
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Dynamic Contact Angles and Contact Angle Hysteresis of Plasma Polymers
Langmuir, 1994Dynamic advancing and receding contact angles and the contact angle hysteresis for different plasma polymers deposited on microscope cover glasses were investigated by the Wilhelmy plate method. The hysteresis loops observed by this dynamic method show two major factors: (1) the meniscus change at the transition region; (2) the wettability change of ...
J.-H. Wang +3 more
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Contact Angle Hysteresis, Adhesion, and Marine Biofouling
Langmuir, 2004Adhesive and marine biofouling release properties of coatings containing surface-oriented perfluoroalkyl groups were investigated. These coatings were prepared by cross-linking a copolymer of 1H,1H,2H,2H-heptadecafluorodecyl acrylate and acrylic acid with a copolymer of poly(2-isopropenyl-2-oxazoline) and methyl methacrylate at different molar ratios ...
Donald L, Schmidt +4 more
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Contact Angle and Contact Angle Hysteresis Measurements Using the Capillary Bridge Technique
Langmuir, 2009A new experimental technique is proposed to easily measure both advancing and receding contact angles of a liquid on a solid surface, with unprecedented accuracy. The technique is based on the analysis of the evolution of a capillary bridge formed between a liquid bath and a solid surface (which needs to be spherical) when the distance between the ...
Restagno, Frederic +4 more
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