Results 21 to 30 of about 2,587,535 (290)
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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Superhydrophobic surfaces: a model approach to predict contact angle and surface energy of soil particles [PDF]
, 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
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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 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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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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Characterization of ultrahydrophobic hierarchical surfaces fabricated using a single-step fabrication methodology [PDF]
, 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
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Observation of contact angle hysteresis due to inhomogeneous electric fields
Communications Physics, 2021 Wetting of surfaces can be affected by surface roughness, presence of surface chemical defects, or by electric fields. Here, the authors perform electrowetting experiments on microstriped electrodes and show that the droplet’s static contact angle ...
Wei Wang +3 more
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Micromachines, 2023 In recent times, the utilization of three-dimensional (3D) printing technology, particularly a variant using digital light processing (DLP), has gained increasing fascination in the realm of microfluidic research because it has proven advantageous and ...
Jeon-Woong Kang +4 more
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Water-Repellency and Anisotropic Wettability of Micro-Grooved Polymer Surfaces [PDF]
한국정밀공학회지, 2020 Superhydrophobicity and anisotropic wettability can be simultaneously achieved by simple groove pattern on a surface. To verify those characteristics experimentally, we fabricated the micro-grooved surfaces with four different groove widths.
Daehee Kwon, Unyoung Ko, Sangmin Lee
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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
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