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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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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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Effects of static contact angles on inviscid gravity-capillary waves
Physics of Fluids, 2004The effects of a static contact angle θ0 on the natural frequencies of inviscid gravity-capillary waves depend on the contact-line conditions. The cases of free-end and pinned-end edge conditions are analyzed in the limit of large Bond number B. The ratio (ω2−ω02)∕ω02 (where ω0 and ω are the natural frequencies without and with meniscus, respectively ...
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Research on the Prediction of Static Contact Angle in Circular Capillary Tubes
Applied Mechanics and Materials, 2012New discovery was found by the capillary experiments with circular glass tubes and partial-wetting liquids that the partial liquid volume under moon surface could be expressed by equivalent height function H(r). Contact angle models suggested in this work, evaluated by Eq.
Jun Biao Wang +2 more
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Static and dynamic contact angle measurements using a custom-made contact angle goniometer
Journal of Mechanical Science and Technology, 2023Hanbyeol Pak, Jeong-Hyun Kim
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Static Water Contact Angle Analysis of Cyclonic Atmospheric Pressure Plasma-Activated Polycarbonate
Japanese Journal of Applied Physics, 2011Polycarbonate (PC) films were activated using cyclonic atmospheric pressure plasma. The experimentally measured gas phase temperature was from 30 to 95 °C, demonstrating that this cyclonic atmospheric pressure plasma can treat heat-sensitive polymeric materials at the low temperatures. The surface hydrophilicity changes of cyclonic atmospheric pressure
Chun Huang +4 more
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Prediction of static contact angles on the basis of molecular forces and adsorption data
Physical Review E, 2016At a three-phase contact line, a liquid bulk phase is in contact with and coexists with a very thin layer of adsorbed molecules. This adsorbed film in the immediate vicinity of a liquid wedge modifies the balance of forces between the liquid and solid phases such that, when included in the balance of forces, a quantitative relationship emerges between ...
M Elena, Diaz +2 more
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A high accurate static contact angle algorithm based on Hough transformation
Measurement, 2014Abstract The static contact angle for blurry drop images is more intricate to obtain. To improve the accuracy of the Hough transformation for the static contact angle calculation, the water drop images with different volumes are generated by the Laplace equation, and the influence of the volume on the accuracy of the Hough transformation is analyzed.
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360� Evaluation of Projected Contact Angles of Static Droplets on Structured Surfaces
2019...
Foltyn, Patrick +2 more
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Temperature-dependence of the static contact angle
2021Duchemin, Benoît +3 more
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