Academic literature on the topic 'Contact angle'

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Journal articles on the topic "Contact angle"

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Marmur, Abraham. "Contact angle equilibrium: the intrinsic contact angle." Journal of Adhesion Science and Technology 6, no. 6 (1992): 689–701. http://dx.doi.org/10.1163/156856192x01042.

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Kwok, D. Y., and A. W. Neumann. "Contact angle measurement and contact angle interpretation." Advances in Colloid and Interface Science 81, no. 3 (1999): 167–249. http://dx.doi.org/10.1016/s0001-8686(98)00087-6.

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Yang, S. Y., G. J. Hirasaki, S. Basu, and R. Vaidya. "Mechanisms for contact angle hysteresis and advancing contact angles." Journal of Petroleum Science and Engineering 24, no. 2-4 (1999): 63–73. http://dx.doi.org/10.1016/s0920-4105(99)00049-2.

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Wang, J. H., P. M. Claesson, J. L. Parker, and H. Yasuda. "Dynamic Contact Angles and Contact Angle Hysteresis of Plasma Polymers." Langmuir 10, no. 10 (1994): 3887–97. http://dx.doi.org/10.1021/la00022a080.

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Ruiz-Cabello, F. J. Montes, M. A. Rodríguez-Valverde, and M. A. Cabrerizo-Vílchez. "Equilibrium contact angle or the most-stable contact angle?" Advances in Colloid and Interface Science 206 (April 2014): 320–27. http://dx.doi.org/10.1016/j.cis.2013.09.003.

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Liu, Yong-Ming, Zi-Qing Wu, Sheng Bao, et al. "The Possibility of Changing the Wettability of Material Surface by Adjusting Gravity." Research 2020 (January 27, 2020): 1–11. http://dx.doi.org/10.34133/2020/2640834.

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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 surfaces under different gravities (1-8G) and found that both of them decrease with the increase of the gravity. The underlying mechanism is revealed to be the contact angle hysteresis and the deformation of the liquid-vapor interface away from the solid surface caused by gradient distribution of the hydrostatic pressure. The real contact angle is n
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Chen, Yongjiang, and Wencheng Tang. "Determination of contact stiffness in ball screws considering variable contact angles." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 12 (2014): 2193–203. http://dx.doi.org/10.1177/0954406213516304.

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The contact angles formed at the position of each ball in ball screws are conventionally assumed to be a constant value in determination of contact stiffness. In this study, instead of being treated as pre-assumed constants, the contact angle is formulated as functions of the position angle of balls to reflect their distribution dependent on the operation condition and design parameters. After establishing a proper transformed coordinate system according to the ball screw mechanism, the variable contact angles and normal forces of the ball screw are predicted. Then the contact stiffness obtaine
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Lyashenko, Iakov A., Valentin L. Popov, and Vadym Borysiuk. "Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations." Biomimetics 8, no. 6 (2023): 477. http://dx.doi.org/10.3390/biomimetics8060477.

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In reported experiments, a steel indenter was pressed into a soft elastomer layer under varying inclination angles and subsequently was detached under various inclination angles too. The processes of indentation and detachment were recorded with a video camera, and the time dependences of the normal and tangential components of the contact force and the contact area, as well as the average contact pressure and average tangential stresses, were measured as functions of the inclination angle. Based on experimental results, a simple theoretical model of the indentation process is proposed, in whi
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Butt, Hans-Jürgen, Jie Liu, Kaloian Koynov, et al. "Contact angle hysteresis." Current Opinion in Colloid & Interface Science 59 (June 2022): 101574. http://dx.doi.org/10.1016/j.cocis.2022.101574.

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Kwok, D. Y., and A. W. Neumann. "Contact angle interpretation: re-evaluation of existing contact angle data." Colloids and Surfaces A: Physicochemical and Engineering Aspects 161, no. 1 (2000): 49–62. http://dx.doi.org/10.1016/s0927-7757(99)00324-6.

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Dissertations / Theses on the topic "Contact angle"

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Lam, C. N. Catherine. "A study of advancing & receding contact angles and contact angle hysteresis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58840.pdf.

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He, Ying Bin. "Contact angle measurements on fine coal particles." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27882.

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This study investigates the techniques of contact angle measurement on fine coal particles. Two techniques, one direct and one indirect, have been investigated and modified. In the direct contact angle measurement technique, high pressure is employed to compress the coal powder into a pellet and the artificial surface of the pellet is employed in the contact angle measurements. The contact angle versus time and versus drop size on the pellet surface are examined. In addition, the pellet properties and factors affecting the pellet properties are also studied. A pellet surface model and a metho
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Hatipogullari, Metin. "Modelling of contact lines on heterogeneous substrates :stick-slip and contact angle hysteresis." Doctoral thesis, Universite Libre de Bruxelles, 2020. https://dipot.ulb.ac.be/dspace/bitstream/2013/304847/5/contratMH.pdf.

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This thesis highlights generic aspects of contact angle hysteresis and stick-slip motion,encountered in most practical wetting situations.First, we study the scaling relation between the heterogeneity strength and the amplitudeof the contact angle hysteresis it induces in the model configuration of a chemicallyheterogeneous microchannel. A key parameter which determines the qualitativefeatures is the heterogeneity wavelength. In particular, we identify a near-thresholdbehavior where the quadratic scaling between the heterogeneity amplitude and the resultinghysteresis, already known for a dilut
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Burel, Thomas. "Investigation of smooth contact angle treatment in porous media." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=30826.

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Some of the key challenges faced in the oil/gas extraction and carbon dioxide injection/storage processes are the presence of complex geometries and the significant effect of the capillary forces which arise at low capillary numbers. Therefore, the contact angle needs to be carefully treated. Mesoscopic techniques such as lattice Boltzmann methods are capable of dealing with lower capillary numbers as compared to the Navier-Stokes solvers, which can also implicitly capture the interface between two fluids. To investigate immiscible two-phase ows at low Reynolds and capillary numbers (Re < 1 an
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Vijayan, Ria. "Wheel-terrain contact angle estimation for planetary exploration rovers." Thesis, Luleå tekniska universitet, Rymdteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70676.

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During space missions, real time tele-operation of a rover is not practical because of significant signal latencies associated with inter planetary distances, making some degree of autonomy in rover control desirable. One of the challenges to achieving autonomy is the determination of terrain traversability. As part of this field, the determination of motion state of a rover on rough terrain via the estimation of wheel-terrain contact angles is proposed. This thesis investigates the feasibility of estimating the contact angles from the kinematics of the rover system and measurements from the o
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Gujjula, Sushrutha Reddy. "Numerical Investigation of Droplet Spread: Effect of Contact Angle Models." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1460447092.

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Ritchie, John. "Contact Angle Of A Nano-Drop On A Heterogeneous Surface." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/174.

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CONTACT ANGLE OF A NANO-DROP ON A HETEROGENEOUS SURFACE By John Andre Ritchie, Master of Science A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at Virginia Commonwealth University Virginia Commonwealth University, 2010 Major Director: Dr. Alenka Luzar, Professor of Chemistry We examine the relation between contact angle of a nanodrop of water and the location of surface-water interaction energy at the perimeter and beneath the drop. Young’s equations gives the relationship between surface tension, at the three phase solid liquid vapor interfac
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Sasges, Michael R. "The effect of gravity on fluid configuration and contact angle hysteresis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27716.pdf.

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Moon, Jungun. "Effect of contact-release angle on hand-handrim for peak velocity." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834622.

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The purpose of this study was to investigate the relationships between the arm joint angle at contact-release with peak velocity in experienced cerebral palsied athletes during wheelchair propulsion. The subjects (n = 5) exercised for a few minutes to familiarize themselves with the roller set up. After practice, each subject was asked to push the wheelchair as fast as possible up to 10 seconds. A tach-generator was attached to the core of the roller and interfaced to a computer via an eight bit A/D converter. The sampling rate of the roller speed was 200Hz. One video camera operating at 30 fr
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Dakpanon, Yaï Laurent. "Contributions expérimentale et théorique à l'identification de paramètres adéquats pour la modélisation de la mouillabilité en ingénierie." Vandoeuvre-les-Nancy, INPL, 2002. http://www.theses.fr/2002INPL103N.

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Ce travail, essentiellement expérimental, s'inscrit dans le cadre des travaux de modélisation mathématique de l'équipe; ceux ci cherchent à identifier des paramètres susceptibles de caractériser les propriétés de mouillabilité d'un support solide par un liquide, lesquelles dépendent du fluide environnant. Le premier résultat de cette étude est la validation de deux corrélations admissibles entre le volume d'une goutte sessile axisymétrique (contrôlé de façon incrémentale et quasi- statique), et l'aire (mesurée) de la surface mouillée associée; ceci tout au long d'un cycle manifestant un phénom
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Books on the topic "Contact angle"

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International Symposium on Contact Angle, Wettability and Adhesion (2nd 2000 Newark, N.J.). Contact angle, wettability & adhesion. Edited by Mittal K. L. 1945-. VSP, 2002.

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Lam, C. N. Catherine. A study of advancing & receding contact angles and contact angle hysteresis. National Library of Canada, 2001.

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International Symposium on Contact Angle, Wettability and Adhesion (3rd 2002 Providence, R.I.). Contact angle, wettability and adhesion. Edited by Mittal K. L. 1945-. VSP, 2003.

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1945-, Mittal K. L., ed. Contact angle, wettability and adhesion. VSP, 2006.

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Mittal, K. L., ed. Advances in Contact Angle, Wettability and Adhesion. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119117018.

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Mittal, K. L., ed. Advances in Contact Angle, Wettability and Adhesion. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118795620.

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Mittal, K. L., ed. Advances in Contact Angle, Wettability and Adhesion. John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119459996.

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Tennant, Cathy. Pyrrhotite floatability studies by contact angle measurements. Laurentian University, School of Engineering, 2001.

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Sasges, Michael R. The effect of gravity on fluid configuration and contact angle hysteresis. National Library of Canada = Bibliothèque nationale du Canada, 1997.

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International Symposium on Contact Angle, Wettability and Adhesion (1st 1992 San Francisco, Calif.). Contact angle, wettability and adhesion: Festschrift in honor of Professor Robert J. Good. Edited by American Chemical Society. Division of Colloid and Surface Chemistry. VSP, 1993.

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Book chapters on the topic "Contact angle"

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Gooch, Jan W. "Contact Angle." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2860.

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Tadros, Tharwat. "Contact Angle." In Encyclopedia of Colloid and Interface Science. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-20665-8_55.

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Gooch, Jan W. "Angle of Contact." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_619.

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Fopp-Spori, Doris M., and Pierre Martin-Tanchereau. "Contact angle measurements." In Biofouling Methods. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118336144.ch11.

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Finn, Robert. "The Capillary Contact Angle." In Grundlehren der mathematischen Wissenschaften. Springer New York, 1986. http://dx.doi.org/10.1007/978-1-4613-8584-4_8.

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Wang, Jiadao. "Liquid Contact Angle Measurement." In Encyclopedia of Tribology. Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_475.

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Rao, S. Ramachandra. "Hydrophobicity and Contact Angle." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4757-4302-9_8.

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Rao, S. Ramachandra. "Hydrophobicity and Contact Angle." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9124-9_8.

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Yuan, Yuehua, and T. Randall Lee. "Contact Angle and Wetting Properties." In Surface Science Techniques. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-34243-1_1.

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Langbein, Dieter. "Interface Tension and Contact Angle." In Springer Tracts in Modern Physics. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45267-2_2.

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Conference papers on the topic "Contact angle"

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Hirano, Susumu, Ayano Yasui, Hirotaka Mizukami, and Toshiyuki Sunaba. "Characterization of Corrosion Inhibitor with Contact Angle Measurement." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16287.

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Abstract Two types of corrosion inhibitors were studied. One of them, is better in adsorption performance in a static environment such as batch treatment. The other shows better inhibitor efficiency under high shear stress conditions. These inhibitors could be differentiated with contact angle measurements. The contact angle is the angle between a tangent to the drop's surface at the contact point and a tangent to the supporting substrate surface. The shape of the drop reveals the wettability and adhesion between the liquid drop and the substrate material. The steel surface becomes hydrophobic
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Kim, Iltai Isaac, Yang Lie, Jeffery A. Greathouse, and Hongkyu Yoonr. "Transmission interference fringe (TIF) for evaporating droplet's contact angle variation." In 10th Thermal and Fluids Engineering Conference (TFEC). Begellhouse, 2025. https://doi.org/10.1615/tfec2025.exp.056033.

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Ni, Qi, Timo Marschke, Samuel Steele, Najafi Seyed, and Nathan B. Crane. "Studying of Contact Angle Friction and Contact Angle Hysteresis (CAH) Though Force Measurements." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89869.

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A novel method of measuring contact line friction and contact angle hysteresis is described. In this method, a droplet is constrained between two surfaces while the surface of interest initiates motion. The results are compared to conventional characterization methods such as measuring the angle of inclined plane for droplet motion and measuring advancing and receding contact angles by infusing/withdrawing liquid from the substrate. At slow speeds, the proposed method provides a measure of the hysteresis but can also capture information about the contact line friction and viscous affects. Drop
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Laga, Ekaterina, and Sergey Borovikov. "Dynamic contact angles and contact angle hysteresis on laser-textured aluminum alloy surfaces." In THERMOPHYSICAL BASIS OF ENERGY TECHNOLOGIES (TBET 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0047327.

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Field, Brandon S. "Visualization of Dynamic Contact Angle." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17512.

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Capillary rise of air-water-solid systems have been recorded with high-speed video. Glass and metal have been used as the solid phase, and the dynamic shape of the meniscus and contact angle have been characterized. The advancing and receding contact angle is of interest in computational simulations of boiling flow, and the present visualizations attempt to quantify the dynamic aspects of contact line motion. The centroid of the capillary meniscus has been tracked in order to determine the force at the contact line based on a force balance of the elevated fluid phase. The solid phase is raised
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Kukielka, L., J. Chodor, and B. Storch. "New method of determination of the tool rake angle on the basis of the crack angle of the specimen in tensile tests and numerical simulations." In CONTACT/SURFACE 2009. WIT Press, 2009. http://dx.doi.org/10.2495/secm090191.

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Vafaei, Saeid, Dongsheng Wen, Ganapathiraman Ramanath, and Theodorian Borca-Tasciuc. "Surface Wettability Through Asymptotic Contact Angle." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78361.

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The purpose of this investigation is to find a unique and accurate criterion to measure surface wettability. The asymptotic contact angle (droplet contact angle in no gravity condition), which is independent of droplet size, is used to identify the surface wettability in this work. The asymptotic contact angle is calculated by equating the normal component of interfacial force on an axisymmetric droplet and spherical droplet. The effect of 2.5 nm bismuth telluride nanoparticles on surface wettability is measured and evaluated by asymptotic contact angles as a sample. This paper also studies th
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Marquez, Izabel B., and Joseph Kalman. "Dynamic Contact Angle Measurements Using LabRam." In AIAA SCITECH 2023 Forum. American Institute of Aeronautics and Astronautics, 2023. http://dx.doi.org/10.2514/6.2023-2558.

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Hong, Fangjun, Ping Cheng, Zhen Sun, and Huiying Wu. "Simulation of Spreading Dynamics of a EWOD Droplet With Dynamic Contact Angle and Contact Angle Hysteresis." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18558.

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In this paper, the electrowetting dynamics of a droplet on a dielectric surface was investigated numerically by a mathematical model including dynamic contact angle and contact angle hysteresis. The fluid flow is described by laminar N-S equation, the free surface of the droplet is modeled by the Volume of Fluid (VOF) method, and the electrowetting force is incorporated by exerting an electrical force on the cells at the contact line. The Kilster’s model that can deal with both receding and advancing contact angle is adopted. Numerical results indicate that there is overshooting and oscillatio
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Houdková, Š., F. Zahálka, and M. Kašparová. "The influence of the spraying angle on properties of thermally sprayed HVOF cermet coatings." In CONTACT/SURFACE 2009. WIT Press, 2009. http://dx.doi.org/10.2495/secm090061.

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Reports on the topic "Contact angle"

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Wu, Qihau, Kathryn Kremer, Stephen Gibbons, and Alan Kennedy. Determination of contact angle and surface tension of nanomaterial solutions by optical contact angle system. Engineer Research and Development Center (U.S.), 2019. http://dx.doi.org/10.21079/11681/33395.

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Heller, Jack, and Emily Asenath-Smith. Surface wettability using contact angle goniometry. Cold Regions Research and Engineering Laboratory (U.S.), 2018. http://dx.doi.org/10.21079/11681/26471.

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Ripple, Dean. Dynamic contact angle of a liquid spreading on a heated plate. National Institute of Standards and Technology, 1999. http://dx.doi.org/10.6028/nist.ir.6351.

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Yu, Chau-Chih, Jin-Yan Hsu, and Tsung-Hua Hsu. The Development of Non-Contact Torque and Angle Sensor for Intelligent Power Assist System. SAE International, 2013. http://dx.doi.org/10.4271/2013-32-9119.

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Bessacini, Anthony F., and Robert F. Pinkos. Control of Remotely Guided Vehicles: A Method for Approaching a Stationary Contact at a Particular Arrival Angle or for Tail-Chasing a Moving Contact. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada328759.

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Zen, Graham, Erika Guaba-Roldan, Jillian O'Neel, Anthony Benedetti, and Bryan Hunter. Optimizing Aluminum Bonding: Exploring Surface Roughness and Contact Angle Effects through Plasma and Acid Etching Contrasts. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2373138.

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Zen, Graham, Erika Guaba-Roldan, Jillian O'Neel, Anthony Benedetti, and Bryan Hunter. Optimizing Aluminum Bonding: Exploring Surface Roughness and Contact Angle Effects through Plasma and Acid Etching Contrasts. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2375826.

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Wallach, Rony, Tammo Steenhuis, Ellen R. Graber, David DiCarlo, and Yves Parlange. Unstable Flow in Repellent and Sub-critically Repellent Soils: Theory and Management Implications. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7592643.bard.

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Water repellency causes unstable wetting fronts that result in water moving in preferential flowpaths through homogeneous soils as well in structured soils where macropores enhance the preferential flow pattern. Water repellency is typically associated with extended water ponding on the soil surface, but we have found that repellency is important even before the water ponds. Preferential flow fingers can form under conditions where the contact angle is less than 90o, but greater than 0o. This means that even when the soil is considered wettable (i.e., immediate penetration of water), water dis
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Singh, Rajesh, Jennifer Yao, Yucheng Fu, Dushyant Barpaga, and Zhijie Xu. Experimental measurement of the effective contact angle for solvent/packing interactions in a structured packed column for CO2 capture. Office of Scientific and Technical Information (OSTI), 2023. https://doi.org/10.2172/2496704.

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Shillito, Rose, Markus Berli, and Teamrat Ghezzehei. Quantifying the effect of subcritical water repellency on sorptivity : a physically based model. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41054.

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Soil water wettability or water repellency is a phenomenon that can affect infiltration and, ultimately, runoff. Thus, there is a need to develop a model that can quantitatively capture the influence of water repellency on infiltration in a physically meaningful way and within the framework of existing infiltration theory. The analytical model developed in this study relates soil sorptivity (an infiltration parameter) with contact angle (a direct measure of water repellency) for variably saturated media. The model was validated with laboratory experiments using a silica sand of known propertie
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