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Contact angle hysteresis on superhydrophobic stripes [PDF]
The Journal of Chemical Physics, 2014 We study experimentally and discuss quantitatively the contact angle hysteresis on striped superhydrophobic surfaces as a function of a solid fraction, ϕS. It is shown that the receding regime is determined by a longitudinal sliding motion of the deformed contact line. Despite an anisotropy of the texture the receding contact angle remains isotropic, i.
Dubov, Alexander L. +3 more
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AIP Advances, 2022 A surfactant-coated droplet attached to a rough wall subjected to shear flow is investigated using a coupled lattice Boltzmann with the finite difference method, where a contact angle hysteresis model is introduced into the method to characterize the ...
Dapeng Deng +3 more
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Advances in Civil Engineering, 2021 The hysteresis characteristics of soil-water characteristic curves (SWCCs) under dry-wet cycling conditions are very important for understanding unsaturated soil properties, so it is crucial to propose an accurate and efficient method for predicting the ...
Gaoliang Tao +4 more
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Measuring Surface Tensions of Soft Solids with Huge Contact-Angle Hysteresis
Physical Review X, 2021 The equilibrium contact angle of a droplet resting on a solid substrate can reveal essential properties of the solid’s surface. However, when the motion of a droplet on a surface shows significant hysteresis, it is generally accepted that the solid’s ...
Jin Young Kim +5 more
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The Possibility of Changing the Wettability of Material Surface by Adjusting Gravity
Research, 2020 The contact angle, as a vital measured parameter of wettability of material surface, has long been in dispute whether it is affected by gravity. Herein, we measured the advancing and receding contact angles on extremely low contact angle hysteresis ...
Yong-Ming Liu +14 more
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Determination of the hysteresis of the contact angle of wetting of boiling surfaces [PDF]
E3S Web of Conferences, 2023 For a deeper understanding of the fluid dynamics and heat transfer in the transition layer, when studying the dynamics of a two-phase flow during boiling and a heat transfer crisis, i.e.
Bykovskaya Elena F. +1 more
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A thermodynamic model of contact angle hysteresis [PDF]
The Journal of Chemical Physics, 2017 When a three-phase contact line moves along a solid surface, the contact angle no longer corresponds to the static equilibrium angle but is larger when the liquid is advancing and smaller when the liquid is receding. The difference between the advancing and receding contact angles, i.e., the contact angle hysteresis, is of paramount importance in ...
Makkonen, Lasse
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Development of a Contact Force Model Suited for Spherical Contact Event
Actuators, 2023 The stiffness coefficient suited for a spherical contact body is developed by means of a contact semi-angle based on Steuermann’s theory. The new static contact force model is close to the results of FEM when the index of the polynomial is equal to 2 ...
Siyuan Wang, Peng Gao
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A new model for contact angle hysteresis
Networks & Heterogeneous Media, 2007 We present a model which explains several experimental observations relating contact angle hysteresis with surface roughness. The model is based on the balance between released capillary energy and dissipation associated with motion of the contact line: it describes the stick–slip behavior of drops on a rough surface using ideas similar to those ...
Antonio DeSimone +2 more
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Contact angle hysteresis in a microchannel: Statics [PDF]
Physical Review Fluids, 2019 We study contact angle hysteresis in a chemically heterogeneous microchannel by tracking static meniscus configurations in the microchannel upon varying the volume of liquid. We first construct a graphical force balance similar to a previous approach by Joanny and de Gennes for this system, though here with a straight contact line.
Hatipogullari, Metin +4 more
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