Results 11 to 20 of about 60,431 (253)
Contact angle hysteresis and pinning at periodic defects in statics [PDF]
Physical Review E, 2014 This article deals with the theoretical prediction of the wetting hysteresis on nonideal solid surfaces in terms of the surface heterogeneity parameters. The spatially periodical chemical heterogeneity is considered. We propose precise definitions for both the advancing and the receding contact angles for the Wilhelmy plate geometry.
Iliev, Stanimir +2 more
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Heat and Mass Transfer Processes and Evaporation of a Liquid Droplet on a Structured Surface
Energies, 2023 The characteristics of water droplet heating and evaporation on structured hydrophobic and hydrophilic surfaces in the range of static contact angles from 73° to 155° were studied experimentally using high-speed video recording.
Dmitrii V. Antonov +2 more
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An influence of shroud design parameters on the static stresses of blade assemblies [PDF]
MATEC Web of Conferences, 2019 In this study, the structural analysis of the blade assemblies was carried out using the finite element method to determine the influence of design parameters of shroud couplings on the static stresses of turbine rotor blades with zigzag and slant shroud
Savchenko Kyrylo +4 more
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Advances in Materials Science and Engineering, 2020 The dynamic contact angle model is applied in the formation process of a series of bubbles from Period-I regime to Period-II regime by using the VOF method on a 2D axisymmetric domain.
Nan Chen, Xiyu Chen, Antonio Delgado
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Evaluation of Some Adjuvants in Improving Foliar Fertilizers Efficiency [PDF]
Arab Universities Journal of Agricultural Sciences, 2021 A series of lab and field experiments were carried out to evaluate the possibility of using some substances as adjuvants added to the foliar fertilizer tank to improve fertilizer application and enhance use efficiency.
Dina Omran +3 more
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Is contact angle a cause or an effect? – A cautionary tale [PDF]
E3S Web of Conferences, 2020 The most influential parameter on the behavior of two-component flow in porous media is “wettability”. When wettability is being characterized, the most frequently used parameter is the “contact angle”.
Ruth Douglas
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Multifunctional aluminium surfaces – Laser-structured micropatterns with ice-repellent, superhydrophobic and easy-to-clean properties [PDF]
MATEC Web of Conferences, 2020 In this work, the fabrication of multifunctional periodic microstructures on pure aluminium is presented. Three different geometries were fabricated with feature sizes ranging between 7 µm and 50 µm by using laser-based microstructuring methods.
Milles Stephan +3 more
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Static Electrification by Nonwetting Liquids. Contact Charging and Contact Angles
Langmuir, 1995 A glass slide hydrophobized with dimethyldichlorosilane appears to be electrostatically charged when a nonwetting liquid recedes from its surface. The surface charge has negative polarity. The density of the charge which arises on retraction from water is 10 -4 C/m 2 . The half-life of the charge on the surface in air is 0.5 h.
Yaminsky, V, Johnston, M
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A Variational Approach to Contact Angle Saturation and Contact Line Instability in Static Electrowetting [PDF]
The Quarterly Journal of Mechanics and Applied Mathematics, 2009 Drops of a conducting fluid in electrowetting devices tend to spread when a difference of potential V o is set between the drop and an electrode external to it. The classical Lippmann theory predicts unlimited spreading, with a decrease of the contact angle between drop and solid substrate, as one increases V 0 .
M. A. Fontelos, U. Kindelan
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Investigation of drop dynamic contact angle on copper surface
EPJ Web of Conferences, 2015 This paper presents experimental results of the studying the effect of surface roughness, microstructure and flow rate on the dynamic contact angle at spreading of distilled non deaerate water drop on a solid horizontal substrates. Copper substrates with
Orlova Evgenija +2 more
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