Results 31 to 40 of about 5,035,403 (328)

Development of superhydrophobic fabrics by surface fluorination and formation of CNT-induced roughness

open access: yesMedžiagotyra, 2015
Superhydrophobictextile material having self-cleaning function was developed by employing carbon nanotubes (CNTs) and water-repellent agents.Hydrophobic fabrics were prepared on 100% polyester woven fabrics withvarious yarn diameters and yarn types.
Myoung Hee Shim   +2 more
doaj   +1 more source

Inertial coalescence of droplets on a partially wetting substrate [PDF]

open access: yes, 2013
We consider the growth rate of the height of the connecting bridge in rapid surface-tension-driven coalescence of two identical droplets attached on a partially wetting substrate.
Dominique Legendre   +5 more
core   +3 more sources

Contact Angle Hysteresis on Superhydrophobic Stripes

open access: yes, 2014
We study experimentally and discuss quantitatively the contact angle hysteresis on striped superhydrophobic surfaces as a function of a solid fraction, $\phi_S$.
Dubov, Alexander L.   +3 more
core   +1 more source

Effect of contact angle and helix angle on slide-roll ratio under the uniform motion state of BSM

open access: yesMATEC Web of Conferences, 2017
To study the effect of contact and helix angles on slide-roll ratio at the ball contact point under the uniform motion state of ball screw mechanism (BSM), a slide- roll ratio model was derived in the literature [9] were used in this paper.
Deshun Kong, Min Wang, Xiangsheng Gao
doaj   +1 more source

A comparison of slip, disjoining pressure, and interface formation models for contact line motion through asymptotic analysis of thin two-dimensional droplet spreading [PDF]

open access: yes, 2014
The motion of a contact line is examined, and comparisons drawn, for a variety of models proposed in the literature. Pressure and stress behaviours at the contact line are examined in the prototype system of quasistatic spreading of a thin two ...
Kalliadasis, Serafim   +3 more
core   +2 more sources

Determination of contact angle hysteresis of water microdroplets evaporating on hydrolyzed PET foils [PDF]

open access: yesActa Montanistica Slovaca, 2013
Moderately hydrophobic surfaces of PET foils were gradually hydrophilized by their immersion in NaOH solutions of increasing concentration. Then, the contact angle and geometric factors of microliter water drops, deposited on these polymer surfaces, were
Martin Nagy , Jiří Škvarla
doaj  

A Kinematic Evolution Equation for the Dynamic Contact Angle and some Consequences

open access: yes, 2019
We investigate the moving contact line problem for two-phase incompressible flows with a kinematic approach. The key idea is to derive an evolution equation for the contact angle in terms of the transporting velocity field.
Bothe, Dieter   +2 more
core   +1 more source

Asymptotic expansions of the contact angle in nonlocal capillarity problems [PDF]

open access: yes, 2016
We consider a family of nonlocal capillarity models, where surface tension is modeled by exploiting the family of fractional interaction kernels $|z|^{-n-s}$, with $s\in(0,1)$ and $n$ the dimension of the ambient space.
Dipierro, Serena   +2 more
core   +4 more sources

Experimental investigation on the effect of accelerating motion of contact line on the dynamic contact angle

open access: yesNihon Kikai Gakkai ronbunshu, 2014
The dynamic contact angle, the angle between the surfaces of the liquid and the solid at a moving contact line, is one of the primary conditions for the dynamics of the liquid surface confined by solid wall.
Takahiro ITO   +6 more
doaj   +1 more source

Regimes of Wetting Transitions on Superhydrophobic Textures Conditioned by Energy of Receding Contact Lines

open access: yes, 2015
We discuss an evaporation-induced wetting transition on superhydrophobic stripes, and show that depending on the elastic energy of the deformed contact line, which determines the value of an instantaneous effective contact angle, two different scenarios ...
Dubov, Alexander L.   +3 more
core   +1 more source

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