Results 161 to 170 of about 297,484 (197)
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Contact angle equilibrium: the intrinsic contact angle
Journal of Adhesion Science and Technology, 1992The conceptual and mathematical difficulties associated with contact angle equilibrium are reviewed and analyzed. The main discussion is centered around the theory of the intrinsic contact angle and its dependence on the three-phase mutual interactions in the vicinity of the contact line.
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Physics of Fluids A: Fluid Dynamics, 1992
Young [Philos. Trans. (1805)] derived an equation for the contact angle between a liquid–gas interface and a solid boundary, but doubts have been raised about its validity. This issue is reexamined on the basis of a new integral equation for the interface [J. B. Keller and G. J. Merchant, J. Stat. Phys. 63, 1039 (1991)].
Gregory J. Merchant, Joseph B. Keller
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Young [Philos. Trans. (1805)] derived an equation for the contact angle between a liquid–gas interface and a solid boundary, but doubts have been raised about its validity. This issue is reexamined on the basis of a new integral equation for the interface [J. B. Keller and G. J. Merchant, J. Stat. Phys. 63, 1039 (1991)].
Gregory J. Merchant, Joseph B. Keller
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Contact lines with a contact angle
Journal of Fluid Mechanics, 2013AbstractThis work builds on the foundation laid by Benney & Timson (Stud. Appl. Maths, vol. 63, 1980, pp. 93–98), who examined the flow near a contact line and showed that, if the contact angle is $18{0}^{\circ } $, the usual contact-line singularity does not arise.
E. S. Benilov, M. Vynnycky
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CONTACT ANGLE MEASUREMENTS ON HARD CONTACT LENSES
Optometry and Vision Science, 1973ABSTRACT The contact angle of water on three hard contact lens materials was determined by direct measurement. Aqua‐Lens and Aqua‐Cept materials had lower contact angles than conventional hard lens materials.
M G, Harris, R, Oye, K, Hall, I, Fatt
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Contact Angle and Local Wetting at Contact Line
Langmuir, 2012This theoretical study was motivated by recent experiments and theoretical work that had suggested the dependence of the static contact angle on the local wetting at the triple-phase contact line. We revisit this topic because the static contact angle as a local wetting parameter is still not widely understood and clearly known.
Ri, Li, Yanguang, Shan
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Contact Angles on Spherical Surfaces
Langmuir, 2008In this paper, we explore the influence of curved surfaces on contact angles. Small liquid drops were deposited at the apex of spheres. Liquid was added to advance the contact line (or withdrawn to cause recession). As drop volume increased, the contact line advanced outward and downward.
C W, Extrand, Sung In, Moon
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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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Contact Angle Saturation in Electrowetting
The Journal of Physical Chemistry B, 2005Electrowetting is the phenomenon of contact angle decrease under the influence of an external voltage applied across the solid/liquid interface. Electrowetting offers an interesting possibility to enhance the wettability of hydrophobic materials without altering the chemical composition of the system and thus could be incorporated in various ...
Anthony, Quinn +2 more
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Pressure Dependence of the Contact Angle
The Journal of Physical Chemistry B, 2007When a liquid and its vapor contact a smooth, homogeneous surface, Gibbsian thermodynamics indicates that the contact angle depends on the pressure at the three-phase line of an isothermal system. When a recently proposed adsorption isotherm for a solid-vapor interface is combined with the equilibrium conditions and the system is assumed to be in a ...
Jiyu, Wu, T, Farouk, C A, Ward
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Contact angles on particles and plates
Colloids and Surfaces, 1987Abstract Contact angles on partially methylated quartz plates and particles of known surface coverage have been measured as a function of surface coverage and compared with predictions based on the Cassie equation. Advancing and receding water-contact angles on quartz plates have been determined by the captive-bubble and sessile-drop methods ...
Crawford, R., Koopal, L.K., Ralston, J.
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