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Static and Dynamic Contact Angles of Water on Polymeric Surfaces
Langmuir, 1997Static contact angle and dynamic (advancing and receding) contact angles of water on polymeric surfaces were investigated using microscope cover glasses coated with various plasma polymers of trimethylsilane and oxygen. By variation of the mole fraction of the TMS/oxygen mixture, glass surfaces having varying degrees of wettability were prepared.
Masayo Miyama +4 more
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How pinning and contact angle hysteresis govern quasi-static liquid drop transfer
Soft Matter, 2016This paper presents both experimental and numerical simulations of liquid transfer between two solid surfaces with contact angle hysteresis (CAH). Systematic studies on the role of the advancing contact angle (θa), receding contact angle (θr) and CAH in determining the transfer ratio (volume of the liquid transferred onto the acceptor surface over the ...
H, Chen +4 more
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Effect of Camera Parallax Angle on the Accuracy of Static Contact Angle Measurements
LangmuirMeasuring the contact angle at the solid/liquid/vapor triple point in sessile drop experiments is one of the most popular and simple ways to quantify the wettability of surfaces and determine the surface free energy. Despite decades of technical advancements in contact angle measurements, which allowed for improving the precision of sessile drop ...
Owen M. Johnson, Filippo Mangolini
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Fuzzy based models for estimating static contact angle and sliding angle of liquid drops
Progress in Organic Coatings, 2018Abstract Prediction of the contact angles and sliding angles of liquid drops is so difficult, because the interaction among the variables, which have impact on the angles, is so complex. Therefore, in this paper fuzzy logic was used to develop prediction models.
Naser Valipour Motlagh +1 more
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Static contact angle hysteresis on smooth, homogeneous solid substrates
Colloid and Polymer Science, 2012A theory of contact angle hysteresis on smooth, homogeneous solid substrates is developed in terms of shape of disjoining/conjoining pressure isotherm and quasi-equilibrium phenomena. It is shown that all contact angles, θ, in the range θ r
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Langmuir, 2017
Elucidating the intrinsic water wettability of the graphitic surface has increasingly attracted research interests, triggered by the recent finding that the well-established hydrophobicity of graphitic surfaces actually results from airborne hydrocarbon contamination.
Andrew Kozbial +3 more
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Elucidating the intrinsic water wettability of the graphitic surface has increasingly attracted research interests, triggered by the recent finding that the well-established hydrophobicity of graphitic surfaces actually results from airborne hydrocarbon contamination.
Andrew Kozbial +3 more
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Numerical simulation of static and sliding drop with contact angle hysteresis
Journal of Computational Physics, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dupont, Jean-Baptiste +1 more
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Comparison of static contact angle change and relaxation in EWOD devices
2009 Spanish Conference on Electron Devices, 2009In conventional Electrowetting on Dielectric (EWOD) devices a static change of the contact angle is observed when a voltage is applied to the electrodes, usually correlated to the Lippmann equation. In this paper we analyze the contact angle changes by using two different dielectrics of different materials and thicknesses and also comparing two ...
Vito di Virgilio, Luis Castaner
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A Static Contact Angle Algorithm for Silicone Rubber Aging Experiments
IEEE Transactions on Power Delivery, 2013To improve the accuracy of the static contact angle measurement in the silicone rubber aging experiments, a high accurate contact angle algorithm in combination with the circle fitting algorithm and ellipse fitting algorithm is proposed. The influence of the water drop volume and noise on the calculation accuracies of the two algorithms are analyzed ...
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Study of static contact angle measurement method based on least squares fitting
2011 International Conference on Electrical and Control Engineering, 2011In order to get accurate measurement of static contact angle of silicone rubber, the method based on the least squares fitting is proposed to obtain static contact angle through fitting the globule edge. This method fits the globule edge by the least square method according to the rule that the globule edge is round if the globule only has little water.
Fangcheng Lu +3 more
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