Results 21 to 30 of about 3,262,089 (280)

Superhydrophobic surfaces: a model approach to predict contact angle and surface energy of soil particles [PDF]

open access: yes, 2009
Wettability of soil affects a wide variety of processes including infiltration, preferential flow and surface runoff. The problem of determining contact angles and surface energy of powders, such as soil particles, remains unsolved.
Bachmann, Jörg, McHale, Glen
core   +1 more source

Characterization of ultrahydrophobic hierarchical surfaces fabricated using a single-step fabrication methodology [PDF]

open access: yes, 2011
Hydrophobic surfaces with microscale roughness can be rendered ultrahydrophobic by the addition of sub-micron-scale roughness. A simple yet highly effective concept of fabricating hierarchical structured surfaces using a single-step deep reactive ion ...
S V Garimella   +5 more
core   +1 more source

Multifunctional aluminium surfaces – Laser-structured micropatterns with ice-repellent, superhydrophobic and easy-to-clean properties [PDF]

open access: yesMATEC 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
doaj   +1 more source

Static Electrification by Nonwetting Liquids. Contact Charging and Contact Angles

open access: yesLangmuir, 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
openaire   +1 more source

Surface modification of UV Cured epoxy resins by click Chemistry [PDF]

open access: yes, 2010
A novel method for surface modification of UV-cured epoxy network was described. Photoinitiated cationic copolymerization of a bisepoxide, namely 3,4-epoxy cyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (EEC) with epibromohydrine (EBH) by using a ...
Yuksel Durmaz, Y.   +6 more
core   +1 more source

A Variational Approach to Contact Angle Saturation and Contact Line Instability in Static Electrowetting [PDF]

open access: yesThe 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
openaire   +1 more source

Investigation of drop dynamic contact angle on copper surface

open access: yesEPJ 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
doaj   +1 more source

An asperity-based finite element model for electrical contact of microswitches [PDF]

open access: yes, 2013
Precise prediction of electrical contact resistance is important for microswitches. The contact spot used to beconsidered as a circle in earlier literature, where there was only one geometrical parameter: the radius of the a-spots.
Colin, Stephane   +7 more
core   +1 more source

Effect of Paper Surface Properties on Coated Paper Wettability with Different Fountain Solutions

open access: yesBioResources, 2014
Wetting of coated papers by isopropyl alcohol (IPA)-based fountain solutions or surfactant solutions was studied in this paper. Additionally, the effect of paper surface properties on wetting was analyzed.
Nuria Gómez   +2 more
doaj   +1 more source

Effect on oxides on surface topography and thermal contact resistance [PDF]

open access: yes, 1979
The effect of oxides on the topographies of various random engineering surfaces and steady-state thermal contact resistances between oxidefree and oxidized metallic surfaces in contact in high vacua have been investigated. The results of many previous
Mian, M. N.
core   +7 more sources

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