Results 311 to 320 of about 221,487 (372)
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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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Langmuir, 2018
The profile, apparent contact angle (ACA), contact angle hysteresis (CAH), and wetting state transmission energy barrier (WSTEB) are important static and dynamic properties of a large-volume droplet on the hierarchical surface.
Jian Dong +4 more
semanticscholar +1 more source
The profile, apparent contact angle (ACA), contact angle hysteresis (CAH), and wetting state transmission energy barrier (WSTEB) are important static and dynamic properties of a large-volume droplet on the hierarchical surface.
Jian Dong +4 more
semanticscholar +1 more source
Contact Angle Hysteresis at the Nanometer Scale
Physical Review Letters, 2011Using atomic force microscopy with nonconventional carbon tips, the pinning of a liquid contact line on individual nanometric defects was studied. This mechanism is responsible for the occurrence of the contact angle hysteresis. The presence of weak defects which do not contribute to the hysteresis is evidenced for the first time. The dissipated energy
Delmas, Mathieu +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 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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Contact angle hysteresis on heterogeneous surfaces
Langmuir, 1985Considerations sur le probleme de montee capillaire sur une plaque verticale dont la surface est partiellement recouverte d'un materiau de faible energie superficielle. L'hysteresis, la difference entre les angles de contact avancant et rentrant, est associee, a l'existence de minima multiples dans la fonctionnelle de l'energie ...
Leonard W. Schwartz, Stephen Garoff
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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 in multiphase systems
Colloid and Polymer Science, 2012Contact angle (CA) hysteresis is the difference between the maximum (advancing) and minimum (receding) water CA. Hysteresis is caused by adhesion hysteresis in the solid–water contact area (2D effect) and by pinning of the solid–water–air triple line due to the surface roughness (1D effect).
Vahid Hejazi, Michael Nosonovsky
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Surface heterogeneity and contact angle hysteresis
Colloid & Polymer Science, 1992The effect of surface heterogeneity on contact angle hysteresis is studied by using the model of Neumann and Good of a vertical plate with horizontal heterogeneous strips. The results of this study explain well known, but not understood patterns of contact angle behaviour: On the one hand, the advancing contact angle on a carefully prepared solid ...
D. Li, A. W. Neumann
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