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Equilibrium contact angle or the most-stable contact angle?
Advances in Colloid and Interface Science, 2014 It is well-established that the equilibrium contact angle in a thermodynamic framework is an "unattainable" contact angle. Instead, the most-stable contact angle obtained from mechanical stimuli of the system is indeed experimentally accessible. Monitoring the susceptibility of a sessile drop to a mechanical stimulus enables to identify the most stable
Miguel Angel Rodriguez-Valverde +2 more
exaly +5 more sources
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Contact angle measurement and contact angle interpretation
Advances in Colloid and Interface Science, 1999Recent progress in the correlation of contact angles with solid surface tensions are summarized. The measurements of meaningful contact angles in terms of surface energetics are also discussed. It is shown that the controversy with respect to measurement and interpretation of contact angles are due to the fact that some (or all) of the assumptions made
D Y Kwok, A W Neumann
exaly +2 more sources
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.
Abraham Marmur
exaly +2 more sources
Contact Angle Hysteresis Explained
Langmuir, 2006A view of contact angle hysteresis from the perspectives of the three-phase contact line and of the kinetics of contact line motion is given. Arguments are made that advancing and receding are discrete events that have different activation energies. That hysteresis can be quantified as an activation energy by the changes in interfacial area is argued ...
Thomas McCarthy +2 more
exaly +3 more sources
Contact angle hysteresis [PDF]
Current Opinion in Colloid and Interface Science, 2022 In thermodynamic equilibrium, the contact angle is related by Young's equation to the interfacial energies. Unfortunately, it is practically impossible to measure the equilibrium contact angle.
Hans-Jürgen Butt +2 more
exaly +2 more sources
Dynamic contact angles and contact angle hysteresis
Journal of Colloid and Interface Science, 1977Abstract Contact angles have been measured as a function of the three-phase-boundary velocity. Large velocity effects observed with other techniques were not seen using the plate method. It is possible to relate the dependence of contact angles on velocity to surface heterogeneity.
Rulon E Johnson +2 more
openaire +1 more source
Journal of Dentistry, 1987
Abstract Determination of contact angle is important to several areas of dentistry, denture retention being one. However, published reports attribute spurious significance to advancing and retreating angles, the distinction between the sources of which is not recognized.
B W, Darvell +2 more
openaire +2 more sources
Abstract Determination of contact angle is important to several areas of dentistry, denture retention being one. However, published reports attribute spurious significance to advancing and retreating angles, the distinction between the sources of which is not recognized.
B W, Darvell +2 more
openaire +2 more sources
Contact Angles of Pharmaceutical Powders
Journal of Pharmaceutical Sciences, 1977Contact angles of pharmaceutical powders were determined by measuring the maximum height of a drop of a saturated solution on a presaturated compact of the material. The results for a series of drugs are presented.
LERK, C F +3 more
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Mechanisms for contact angle hysteresis and advancing contact angles
Journal of Petroleum Science and Engineering, 1999Mixed-wet crude oil/brine/mineral systems typically show a large contact angle hysteresis between the water-receding angle during primary drainage and the water-advancing angle during imbibition. Also, the water-advancing angle may have values that range from 50° to 180°.
S.-Y Yang +3 more
openaire +1 more source
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
openaire +1 more source