Results 41 to 50 of about 221,487 (372)

The Role of Contact Angle Hysteresis for Fluid Transport in Wet Granular Matter [PDF]

, 2015
The stability of sand castles is determined by the structure of wet granulates. Experimental data about the size distribution of fluid pockets are ambiguous about their origin.
Brinkmann, Martin, Herminghaus, Stephan, Herrmann, Hans J., Kadau, Dirk, Mani, Roman, Semprebon, Ciro   +5 more
core   +2 more sources

Non-fluorinated Omniphobic Paper with Ultra-low Contact Angle Hysteresis.

ACS Applied Materials and Interfaces, 2020
Existing methods for fabricating oil-repellent paper rely on highly fluorinated and therefore toxic chemicals. Non-fluorinated omniphobic paper with low contact angle hysteresis (CAH) has not been demonstrated.
Xiaoxiao Zhao, Md Arifur Rahman Khandoker, Kevin Golovin   +2 more
semanticscholar   +1 more source

A simple method to create superhydrophobic aluminium surfaces [PDF]

, 2012
Superhydrophobic surfaces were prepared using a very simple and low-cost method by spray coating. A high static water contact angle of about 154° was obtained by deposition of stearic acid on an aluminium alloy.
Farzaneh, Masoud, Jafari, Reza
core   +2 more sources

Finite element study of displacement controlled fretting in cylinder contact with different axis crossing angles

Advances in Mechanical Engineering, 2022
There is inevitably an angular offset during contact of mechanical structures such as roller bearings or gears. Most of the previous contact models involve the contact between two parallel cylinders.
Tieneng Guo, Ruguo Ji, Yunfei Ma
doaj   +1 more source

Tunable contact angle hysteresis by micropatterning surfaces [PDF]

Applied Physics Letters, 2011
Lithography is used to form circular micropatterns which govern the evaporation of a water droplet. The surfaces are composed of concentric circular defects having a smooth indentation profile. When a droplet encounters a micropattern, evaporation occurs with distinct discontinuities in the droplet wetting contact angle and base radius. The addition of
Debuisson, Damien, Senez, Vincent, Arscott, S.   +2 more
openaire   +4 more sources

Lattice Boltzmann modeling of contact angle and its hysteresis in two-phase flow with large viscosity difference [PDF]

, 2015
Contact angle hysteresis is an important physical phenomenon omnipresent in nature and various industrial processes, but its effects are not considered in many existing multiphase flow simulations due to modeling complexity.
Ju, Yaping, Liu, Haihu, Wang, Ningning, Xi, Guang, Zhang, Yonghao   +4 more
core   +1 more source

Electric field induced reversible spreading of droplets into films on lubricant impregnated surfaces [PDF]

, 2017
Electric fields can be used to force a droplet to wet a solid surface using an applied voltage. However, significant hysteresis usually occurs associated with pinning forces at the contact line.
Brabcova, Z, Brown, CV, McHale, G, Newton, MI, Wells, GG   +4 more
core   +1 more source

Plastron induced drag reduction and increased slip on a superhydrophobic sphere [PDF]

, 2011
On low contact angle hysteresis superhydrophobic surfaces, droplets of water roll easily. It is intuitively appealing, but less obvious, that when such material is immersed in water, the liquid will flow more easily across its surface.
Balmert, Boussinesq, Cao, Choi, Crisp, De Rybczynski, Ferreira, Flynn, Fujita, G. McHale, Gao, Gogte, Hadamard, Hinton, Hinton, Johnson, Johnson, Joseph, Keh, Kwoun, M. I. Newton, M. R. Flynn, McHale, McHale, Neumann, Ou, Priest, Quéré, Quéré, Roach, Roach, Rothstein, Rushton, Senchenko, Shirtcliffe, Shirtcliffe, Stokes, Sugiyama, Thorpe, Thorpe, Vakarelski, Vinogradova, Voronov   +42 more
core   +1 more source

Wetting and Contact-Angle Hysteresis: Density Asymmetry and van der Waals Force.

Physical Review Letters
A droplet depositing on a solid substrate leads to the wetting phenomenon, such as dew on plant leaves. On an ideally smooth substrate, the classic Young's law has been employed to describe the wetting effect. However, no real substrate is ideally smooth
Fei Wang, Britta Nestler
semanticscholar   +1 more source

Wetting of doubly periodic rough surfaces in Wenzel’s regime

MATEC Web of Conferences, 2018
In this work we present preliminary results from our numerical study of the shapes of a liquid meniscus in contact with doubly sinusoidal rough surfaces in Wenzel’s wetting regime.
Iliev Stanimir, Pesheva Nina, Iliev Pavel   +2 more
doaj   +1 more source