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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 ...
Lichao, Gao, Thomas J, McCarthy
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Hysteresis during contact angles measurement
Journal of Colloid and Interface Science, 2010A theory, based on the presence of an adsorbed film in the vicinity of the triple contact line, provides a molecular interpretation of intrinsic hysteresis during the measurement of static contact angles. Static contact angles are measured by placing a sessile drop on top of a flat solid surface.
M Elena, Diaz +3 more
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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
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Contact Angle Hysteresis of Microbead Suspensions
Langmuir, 2010Microbead suspensions are often used in microfluidic devices for transporting biomolecules. An experimental investigation on the wettability of microbead suspension is presented in this study. The variation in the surface tension and the equilibrium contact angle with the change in the volume fraction of the microbead is presented here.
Prashant R, Waghmare, Sushanta K, Mitra
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Constitutive modeling of contact angle hysteresis
Journal of Colloid and Interface Science, 2008We introduce a phase field model of wetting of surfaces by sessile drops. The theory uses a two-dimensional non-conserved phase field variable to parametrize the Gibbs free energy of the three-dimensional system. Contact line tension and contact angle hysteresis arise from the gradient term in the free energy and the kinetic coefficient respectively. A
Vedantam, S., Panchagnula, M.V.
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Contact angle hysteresis on fluoropolymer surfaces
Advances in Colloid and Interface Science, 2007Contact angle hysteresis of liquids with different molecular and geometrical properties on high quality films of four fluoropolymers was studied. A number of different causes are identified for hysteresis. With n-alkanes as probe liquids, contact angle hysteresis is found to be strongly related to the configuration of polymer chains.
H, Tavana +4 more
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Hysteresis, entrapment and contact angle
1984Cumulative volume curves generated by intruding mercury into porous samples are not followed as the pressure is lowered and mercury extrudes out of the pores. In all cases, the depressurization curve lies above the pressurization curve and the hysteresis loop does not close even when the pressure is returned to zero, indicating that some mercury is ...
S. Lowell, Joan E. Shields
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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
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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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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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