Articoli di riviste: "Wetting"

1

Churaev, N. V. "Wetting films and wetting". Revue de Physique Appliquée 23, n. 6 (1988): 975–87. http://dx.doi.org/10.1051/rphysap:01988002306097500.

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Butt, Hans-Jürgen, Rüdiger Berger, Werner Steffen, Doris Vollmer e Stefan A. L. Weber. "Adaptive Wetting—Adaptation in Wetting". Langmuir 34, n. 38 (15 agosto 2018): 11292–304. http://dx.doi.org/10.1021/acs.langmuir.8b01783.

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3

Karmakov, Iordan. "Wetting or non-wetting liquid?" Physics Education 35, n. 6 (novembre 2000): 435–38. http://dx.doi.org/10.1088/0031-9120/35/6/310.

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4

Kalogeropoulou, S., C. Rado e N. Eustathopoulos. "Mechanisms of reactive wetting: the wetting to non-wetting case". Scripta Materialia 41, n. 7 (agosto 1999): 723–28. http://dx.doi.org/10.1016/s1359-6462(99)00207-9.

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5

de Gennes, P. G. "Wetting". Revue de Physique Appliquée 23, n. 6 (1988): 974. http://dx.doi.org/10.1051/rphysap:01988002306097400.

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6

Blokhuis, Edgar M., e Benjamin Widom. "Wetting". Current Opinion in Colloid & Interface Science 1, n. 3 (giugno 1996): 424–29. http://dx.doi.org/10.1016/s1359-0294(96)80143-9.

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7

Leermakers, Frans A. M., Gustavo S. Luengo, Nawel Baghdadli, Christian Mazilier, Anne Potter e Fabien Léonforte. "Turning autophobic wetting on biomimetic surfaces into complete wetting by wetting additives". Soft Matter 16, n. 20 (2020): 4823–39. http://dx.doi.org/10.1039/d0sm00129e.

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Abstract (sommario):

Autophobicity or pseudo partial wetting, a phenomenon of a liquid not spreading on its own monolayer, is characterized by an energy barrier that prevents the growth of a wetting film beyond the monolayer thickness, which additionally may have an impact on the conditioning performance of films.

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8

TAKAHASHI, Gennosuke. "Wetting Dispersant". Journal of the Japan Society of Colour Material 67, n. 1 (1994): 44–51. http://dx.doi.org/10.4011/shikizai1937.67.44.

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9

Rapp, Michael, e William A. Ducker. "Enantiospecific Wetting". Journal of the American Chemical Society 132, n. 51 (29 dicembre 2010): 18051–53. http://dx.doi.org/10.1021/ja109598z.

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10

Verberck, Bart. "Lattice wetting". Nature Physics 12, n. 2 (febbraio 2016): 111. http://dx.doi.org/10.1038/nphys3664.

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11

Bonn, Daniel, e David Ross. "Wetting transitions". Reports on Progress in Physics 64, n. 9 (22 agosto 2001): 1085–163. http://dx.doi.org/10.1088/0034-4885/64/9/202.

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12

De Coninck, Joël, Francois Dunlop e Thierry Huillet. "Metastable wetting". Journal of Statistical Mechanics: Theory and Experiment 2011, n. 06 (22 giugno 2011): P06013. http://dx.doi.org/10.1088/1742-5468/2011/06/p06013.

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13

Wake, Bronwyn. "Arctic wetting". Nature Climate Change 4, n. 6 (28 maggio 2014): 420. http://dx.doi.org/10.1038/nclimate2263.

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14

Teletzke, Gary F., H. Ted Davis e L. E. Scriven. "Wetting hydrodynamics". Revue de Physique Appliquée 23, n. 6 (1988): 989–1007. http://dx.doi.org/10.1051/rphysap:01988002306098900.

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15

Robson, W. Lane M., e Alexander K. C. Leung. "Daytime wetting". Journal of Pediatrics 139, n. 4 (ottobre 2001): 609. http://dx.doi.org/10.1067/mpd.2001.118422.

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16

Aukrust, T., e E. H. Hauge. "Wetting instabilities". Physical Review A 36, n. 8 (1 ottobre 1987): 4097–98. http://dx.doi.org/10.1103/physreva.36.4097.

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17

Robson, W. Lane M., e Alexander K. C. Leung. "Daytime wetting". Journal of Pediatrics 139, n. 4 (ottobre 2001): 609. http://dx.doi.org/10.1016/s0022-3476(01)70030-3.

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18

Bonn, Daniel, David Ross, Emanuel Bertrand, Karine Ragil, Noushine Shahidzadeh, Daniel Broseta e Jacques Meunier. "Wetting transitions". Physica A: Statistical Mechanics and its Applications 306 (aprile 2002): 279–86. http://dx.doi.org/10.1016/s0378-4371(02)00505-8.

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19

Bonn, Daniel. "Wetting transitions". Current Opinion in Colloid & Interface Science 6, n. 1 (febbraio 2001): 22–27. http://dx.doi.org/10.1016/s1359-0294(00)00083-2.

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20

Novotny, V. J., e Abraham Marmur. "Wetting autophobicity". Journal of Colloid and Interface Science 145, n. 2 (settembre 1991): 355–61. http://dx.doi.org/10.1016/0021-9797(91)90367-h.

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21

Cardoso Barato, Andre. "Nonequilibrium Wetting". Journal of Statistical Physics 138, n. 4-5 (3 dicembre 2009): 728–66. http://dx.doi.org/10.1007/s10955-009-9895-x.

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22

Baxter, James. "Combinatorial wetting". Nature Photonics 6, n. 8 (31 luglio 2012): 501. http://dx.doi.org/10.1038/nphoton.2012.198.

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23

Miersemann, Erich. "Wetting barriers". Calculus of Variations and Partial Differential Equations 15, n. 2 (1 settembre 2002): 237–56. http://dx.doi.org/10.1007/s005260100123.

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24

Gao, Lichao, e Thomas J. McCarthy. "Wetting 101°†". Langmuir 25, n. 24 (15 dicembre 2009): 14105–15. http://dx.doi.org/10.1021/la902206c.

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25

Nerli, RB. "Bed wetting". Indian Journal of Health Sciences and Biomedical Research (KLEU) 11, n. 2 (2018): 103. http://dx.doi.org/10.4103/kleuhsj.kleuhsj_140_18.

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26

Norn, M. S. "Wetting time". Acta Ophthalmologica 53, S125 (28 maggio 2009): 42–43. http://dx.doi.org/10.1111/j.1755-3768.1975.tb01229.x.

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27

Bico, J., C. Tordeux e D. Quéré. "Rough wetting". Europhysics Letters (EPL) 55, n. 2 (luglio 2001): 214–20. http://dx.doi.org/10.1209/epl/i2001-00402-x.

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28

Meadow, S. R. "Day wetting". Pediatric Nephrology 4, n. 2 (1990): 178–84. http://dx.doi.org/10.1007/bf00858838.

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29

Cazabat, A. M. "Wetting films". Advances in Colloid and Interface Science 34 (gennaio 1991): 73–88. http://dx.doi.org/10.1016/0001-8686(91)80047-n.

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30

Churaev, N. V., e Z. M. Zorin. "Wetting films". Advances in Colloid and Interface Science 40 (maggio 1992): 109–46. http://dx.doi.org/10.1016/0001-8686(92)80073-7.

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31

Princen, H. M., A. M. Cazabat, M. A. Cohen Stuart, F. Heslot e S. Nicolet. "Instabilities during wetting processes: Wetting by tensioactive liquids". Journal of Colloid and Interface Science 126, n. 1 (novembre 1988): 84–92. http://dx.doi.org/10.1016/0021-9797(88)90102-6.

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32

Czachor, H., M. Flis-Bujak, M. Kafarski e A. Król. "Wetting angle and water sorptivity in mineral soils". Soil and Water Research 3, Special Issue No. 1 (30 giugno 2008): S52—S57. http://dx.doi.org/10.17221/1201-swr.

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Two simple models of a non-cylindrical (wavy) capillary have been applied to show the impact of pore shape and of wetting angle on water sorptivity in soils. Wetting angle derived from the Washburn approach gives an overestimated value because of pores are modelled as round capillary tubes, whereas in reality they are tortuous, wavy and interconnected. In wavy capillaries, the impact of wetting angle on water sorptivity and capillarity driven water transport can be much more pronounced in relation to Washburn approach. An observed wetting front movement can be seen as a superposition of micro jumps and rests. Experiments carried out with glass powder and two soils confirm the above predictions.

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33

Qin, Yuyang, Guoying Li, Zhankuan Mi e Kaifang Fan. "Study of Gravelly Soil Core Material Using a Large-Scale Triaxial Wetting Test". Applied Sciences 13, n. 24 (15 dicembre 2023): 13295. http://dx.doi.org/10.3390/app132413295.

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Wetting deformation has a significant impact on dam safety, and is one of the leading causes of the long-term deformation of dams. For dams to operate safely, it is crucial to precisely estimate the extent of wetting deformation using a reasonable calculation model. This study describes the wetting deformation behavior of gravelly soil core material observed at a hydropower station using a large-scale triaxial wetting test, and the process, characteristics, and mechanism of the wetting deformation are analyzed. The results show that the direction of the wetting deformation exhibits different behaviors influenced by the stress levels. Compared with the significant changes in the wetting direction observed under low stress levels, the changes in the wetting direction under high stress levels appears to lag behind those in wetting deformation. The source of wetting deformation is thought to be the weakening of a material when it encounters water. Thus, a new calculation model of the wetting deformation of gravelly soil core material is proposed. In this model, the wetting strain ratio is in an exponential relationship with the stress levels, and the new model is used to simulate the triaxial wetting test on the gravelly soil core material; its validity and practicability are further evaluated, providing a new computational approach for analyzing the wetting deformation behavior of dams.

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34

Liu, Huan, Jin Zhai e Lei Jiang. "Wetting and anti-wetting on aligned carbon nanotube films". Soft Matter 2, n. 10 (2006): 811. http://dx.doi.org/10.1039/b606654b.

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35

Cahn, J. W. "Wetting and non-wetting near critical points in solids". Physica A: Statistical Mechanics and its Applications 279, n. 1-4 (maggio 2000): 195–202. http://dx.doi.org/10.1016/s0378-4371(99)00513-0.

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36

Khanna, Rajesh, e K. D. P. Nigam. "Partial wetting in porous catalysts: wettability and wetting efficiency". Chemical Engineering Science 57, n. 16 (agosto 2002): 3401–5. http://dx.doi.org/10.1016/s0009-2509(02)00211-7.

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37

Freund, Jonathan B. "The atomic detail of a wetting/de-wetting flow". Physics of Fluids 15, n. 5 (maggio 2003): L33—L36. http://dx.doi.org/10.1063/1.1565112.

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38

Mane, Santakumari, James Turner e Stanley Kostka. "Stability and Effectiveness of Wetting Agents in Stored Growing Media". HortScience 30, n. 4 (luglio 1995): 839D—839. http://dx.doi.org/10.21273/hortsci.30.4.839d.

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Three soilless media of different composition (peat: vermiculite, bark: peat: vermiculite, peat: vermiculite: polystyrene) received one of three wetting agent treatments (AquaGro 160 at 60 ml or 120 ml·m–3; or AquaGro L at 120 ml·m–3) and were subsequently analyzed for wettability after storage for up to 4 months. The respective untreated media served as the controls. All media were stored in closed bags at 24 ± 4C. Water retention was greater in wetting agent-treated media than in controls. Both wetting agents facilitated uniform distribution of water in the media. Control media became more difficult to wet over time, whereas wetting agent treatments maintained uniform wettability of media throughout the storage period. Wetting agent chemistry, treatment rate, and media composition influenced wetting characteristics during media storage. All three wetting agent treatments improved wetting of the peat: vermiculite over the 4-month test period. In bark media, AquaGro 160 applied at 120 ml·m–3 enhanced wetting throughout the study. Media containing polystyrene were difficult to wet. AquaGro 160 applied at 120 ml·m–3 improved wetting for up to 2 months.

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39

Rasouli, Azam, Artur Kudyba, Grzegorz Bruzda, Jafar Safarian e Gabriella Tranell. "High-Temperature Reactive Wetting of Natural Quartz by Liquid Magnesium". Materials 17, n. 6 (11 marzo 2024): 1302. http://dx.doi.org/10.3390/ma17061302.

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High-temperature wetting of natural, high-purity quartz (SiO2) and liquid magnesium (Mg) was investigated at temperatures between 973 and 1273 K. Sessile drop experiments using the capillary purification (CP) procedure were carried out under an Ar gas atmosphere (N6.0), eliminating the native oxide layer on the surface of Mg melt. The results showed that the wetting behavior was strongly dependent on temperature. At 973 and 1073 K, the wetting system displayed relatively large contact angles of 90° and 65°, respectively, demonstrating modest wetting. The wetting increased to some extent by increasing the temperature to 1123 K with a wetting angle of 22°. However, the SiO2/Mg system demonstrated complete wetting at temperatures of 1173 K and above. Furthermore, interface microstructure examination showed different reaction product phases/microstructures, depending on the wetting experiment temperature.

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40

Fergusson, David M., e L. John Horwood. "Nocturnal Enuresis and Behavioral Problems in Adolescence: A 15-Year Longitudinal Study". Pediatrics 94, n. 5 (1 novembre 1994): 662–68. http://dx.doi.org/10.1542/peds.94.5.662.

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Objective. This study examines the relationships between nocturnal enuresis in childhood and measures of behavioral adjustment in adolescence using data collected during the course of a 15-year longitudinal study of a birth cohort of New Zealand children. Method. Data was collected on patterns of nocturnal bladder control at annual intervals to the age of 13 years. At ages 11, 13, and 15 years measures of conduct problems, attention deficit behaviors, and anxiety/withdrawal were gathered. Results. The analysis showed that children who were bed-wettting after the age of 10 years as a result of either primary or secondary enuresis had increased rates of behavioral problems up to the age of 15 years with these children having mean behavior scores that were between .30 to .65 standard deviations higher than children who ceased bed-wetting before the age of 5 years. Regression analysis indicated that these associations were largely spurious and arose because the age of cessation of bed-wetting was correlated with a series of factors (gender, social maturity, childhood IQ, family social background, family stress, and parental conflict) that were also associated with increased rates of adolescent behavior problems. However, even after adjusting for these factors, children who were bed-wetting after the age of 10 years showed slight increases in rates of conduct problems and attention deficit behaviors up to the age of 13 years and increased rates of anxiety/withdrawal up to the age of 15 years. Conclusions. It is concluded that bed-wetting after the age of 10 years is associated with small but detectable increases in risks of conduct problems, attention deficit behaviors, and anxiety/withdrawal in early adolescence. These results show that although it is not the case that children showing nocturnal enuresis are at markedly increased risks of serious psychiatric problems, it may be prudent to determine the extent to which children who are bed-wetting after the age of 10 years show increases in anxious or problem behaviors.

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41

Jin, Jiafeng, Jinsheng Sun, Kesheng Rong, Kaihe Lv, Tuan A. H. Nguyen, Ren Wang, Xianbin Huang, Yingrui Bai, Jingping Liu e Jintang Wang. "Gas-Wetting Alteration by Fluorochemicals and Its Application for Enhancing Gas Recovery in Gas-Condensate Reservoirs: A Review". Energies 13, n. 18 (4 settembre 2020): 4591. http://dx.doi.org/10.3390/en13184591.

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Gas-wetting alteration is a versatile and effective approach for alleviating liquid-blockage that occurs when the wellbore pressure of a gas-condensate reservoir drops below the dew point. Fluorochemicals are of growing interest in gas-wetting alteration because of their high density of fluorine groups and thermal stability, which can change the reservoir wettability into more favorable conditions for liquids. This review aims to integrate the overlapping research between the current knowledge in organic chemistry and enhanced oil and gas recovery. The difference between wettability alteration and gas-wetting alteration is illustrated, and the methods used to evaluate gas-wetting are summarized. Recent advances in the applications of fluorochemicals for gas-wetting alteration are highlighted. The mechanisms of self-assembling adsorption layers formed by fluorochemicals with different surface morphologies are also reviewed. The factors that affect the gas-wetting performance of fluorochemicals are summarized. Meanwhile, the impacts of gas-wetting alteration on the migration of fluids in the pore throat are elaborated. Furthermore, the Wenzel and Cassie-Baxter theories are often used to describe the wettability model, but they are limited in reflecting the wetting regime of the gas-wetting surface; therefore, a wettability model for gas-wetting is discussed. Considering the promising prospects of gas-wetting alteration, this study is expected to provide insights into the relevance of gas-wetting, surface morphology and fluorochemicals, further exploring the mechanism of flow efficiency improvement of fluids in unconventional oil and gas reservoirs.

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42

Mane, Santakumari, e James A. Turner. "Wetting Characteristics of Different Peat and Peat: Bark-based Potting Media: Influence of Wetting Agents in Improving Wetting and Rewetting Performance". HortScience 31, n. 4 (agosto 1996): 583f—584. http://dx.doi.org/10.21273/hortsci.31.4.583f.

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Eight different peat-based or peat: bark-based potting media were evaluated for their wetting performance when treated with the media wetting agent AquaGro 2000 (2–5 oz/yd3). Upon initial irrigation, no differences in wetting uniformity were observed in seven of the eight test media regardless of their media wetting agent treatments. In four media, water retention was reduced by media wetting agent treatment, however, uniform distribution of water was achieved. AquaGro 2000 improved uniformity of initial wetting in one medium in which the initial moisture content was 6.5%. Uniformity of wetting and water retention improved with increasing wetting agent rate. All media were allowed to air dry and then were re-irrigated. Wetting agent-treated media rewet uniformly, while rewetting varied greatly in untreated media (7.5%–82.5%). Less than 50% of the mass of untreated media wet subsequent to drying. Those portions of the untreated media that did wet retained up to three times more water per unit volume compared to AquaGro 2000-treated media. AquaGro 2000 enhanced uniformity of rewetting, reduced water logging, and improved drainage at all rates (2–5 oz/yd3) tested. Media composition (peat vs. peat: bark did not affect wetting agent efficacy.

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43

Wanner, Johannes, e Kai Peter Birke. "Comparison of an Experimental Electrolyte Wetting of a Lithium-Ion Battery Anode and Separator by a Lattice Boltzmann Simulation". Batteries 8, n. 12 (6 dicembre 2022): 277. http://dx.doi.org/10.3390/batteries8120277.

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The filling with electrolyte and the subsequent wetting of the electrodes is a quality-critical and time-intensive process in the manufacturing of lithium-ion batteries. The exact processes involved in the wetting are still under investigation due to their poor accessibility. The accurate replication of the wetting phenomena in porous media can be demonstrated in other research fields by lattice Boltzmann simulations. Therefore, this paper deals with the comparison of experimental wetting and the simulative investigation of the wetting processes of lithium-ion battery materials by a lattice Boltzmann simulation. Particular attention is paid to the interfaces between the battery materials. These effects are relevant for a simulation of the wetting properties at the cell level. The experimental results show a 43% faster wetting of the interface between an anode and a separator than with only an anode. Overall, the simulation results show a qualitatively successful reproduction of the experimental wetting phenomena. In addition, the steps for a more precise simulation and the development of the Digital Twin are shown. This extension enables simulations of the electrolyte wetting phenomena in manufacturing lithium-ion batteries and the quantification of the wetting times.

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44

Biebl, M., H. Nasser e H. Hoster. "Model-based investigation and optimization of electrolyte filling using laser structured electrodes". Journal of Physics: Conference Series 2689, n. 1 (1 gennaio 2024): 012011. http://dx.doi.org/10.1088/1742-6596/2689/1/012011.

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Abstract The wetting of battery electrodes with electrolyte is a time- and cost-intensive process step. One of the biggest problems is the time it takes for the liquid electrolyte to be absorbed into the porous electrode. To reduce this wetting time, laser structured electrodes can be used. The resulting grooves facilitate deeper penetration of the electrolyte during the wetting process, leading to faster wetting. Multiphysics simulations and measurement data will be used to optimize the wetting process and to investigate the influence of the structuring geometry on the wetting time. In addition to modelling the structured electrode, achieving a suitable meshing is crucial. Moreover, the physical behavior of the wetting process will be represented by selecting appropriate and realistic boundary conditions. Capillary effects and fluid flow in porous media will be considered to describe the wetting process. The computer model will be validated using measurement data. In this paper it is shown that the wetting time can be significantly reduced by using structured electrodes. It is also shown that the wetting time is further reduced for smaller distances between the grooves. The software COMSOL MULTIPHYSICS will be used to create the model.

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45

Jia, Zhi-hai, Wei Lei, Hui-nan Yang e Gang Wang. "Dynamic Wetting Behavior of Vibrated Droplets on a Micropillared Surface". Advances in Materials Science and Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/8409683.

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The dynamical wetting behavior has been observed under vertical vibration of a water droplet placed on a micropillared surface. The wetting transition takes place under the different processes. In compression process, the droplet is transited from Cassie state to Wenzel state. The droplet undergoes a Wenzel-Cassie wetting transition in restoring process and the droplet bounces off from the surface in bouncing process. Meanwhile, the wetting and dewetting models during vibration are proposed. The wetting transition is confirmed by the model calculation. This study has potential to be used to control the wetting state.

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46

Song, Kwanwoo, Jinwook Lee, Seong-O. Choi e Jooyoun Kim. "Interaction of Surface Energy Components between Solid and Liquid on Wettability, and Its Application to Textile Anti-Wetting Finish". Polymers 11, n. 3 (14 marzo 2019): 498. http://dx.doi.org/10.3390/polym11030498.

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With various options of anti-wetting finish methods, this study intends to provide basic information that can be applied in selecting a relevant anti-wetting chemical to grant protection from spreading of liquids with different surface energy profiles. With such an aim, the anti-wetting effectiveness of fluorinated coating and silane coating was investigated for liquids having different surface energy components, water (WA), methylene iodide (MI) and formamide (FA). The wetting thermodynamics was experimentally investigated by analyzing dispersive and polar component surface energies of solids and liquids. The role of surface roughness in wettability was examined for fibrous nonwoven substrates that have varied surface roughness. The presence of roughness enhanced the anti-wetting performance of the anti-wetting treated surfaces. While the effectiveness of different anti-wetting treatments was varied depending on the liquid polarities, the distinction of different treatments was less apparent for the roughened fibrous surfaces than the film surfaces. This study provides experimental validation of wetting thermodynamics and the practical interpretation of anti-wetting finishing.

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47

Li, Y. L. "Interfacial Wetting Behavior under Low-Density Ultrasonic Field and Solvent - Assisted Wet Condition". Advanced Materials Research 1015 (agosto 2014): 458–62. http://dx.doi.org/10.4028/www.scientific.net/amr.1015.458.

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In this paper, the author had adopted the low-density ultrasonic field coupling method, coupled the ultrasonic directional beam to metallic melt, and then coupled energy to C/Al interface by sound propagation, eventually accomplish C/Al interfacial wettability and interfacial reaction by using ultrasonic field coupling method, and synthesize Al-Ti-C master alloys by using the same method. Some experiments showed that in the low-density ultrasonic field and under flux auxiliary wetting, there is no explicit incubation period in the prophase of wetting, in the medium term of wetting, the wetting angle between aluminum melt and carbon will reduce with time extension, however, the wetting spreading radius will increase with the extended holding time, and reach wetting balance state in 20 minutes. In the condition of 1023K, the equilibrium wetting angle is less than 22°,and wetting spreading radius is close to 20mm.

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48

Li, Y. L., e F. R. Cao. "Wetting Behavior of Al Melt/C Interface and Al-Ti Melt/C Interface Assisted by AlF₃-KF Salt Eutectic". Applied Mechanics and Materials 490-491 (gennaio 2014): 232–37. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.232.

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This doc This paper is concerned with the wetting of Al melt/graphite (C) substrate and Al-Ti melt/graphite (C) under the action of AlF3-KF salt eutectic. The results show that the intrinsic non-wetting behavior in the Al/C system was confirmed. The reason is because the existence of oxide film of Al melt obstructs the wetting between C and Al melt. However, due to assisted wetting of AlF3-KF salt eutectic, the good wetting behavior of Al,Al-Ti/C system is attributed to the strong physics wetting and subsequent interaction wetting. During the interaction wetting, Al4C3compound forms at the Al/C interfaces while Al4C3and TiC compounds form at the Al-Ti/C interfaces. In the meantime, high temperature effect formed at the interfaces owing to the reaction between Al-Ti and C attains the thermodynamics transformation condition of Al4C3into TiC.

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49

Zhang, Xiang, Bing Li Sun, Wei Na Feng, Qin Xing Zhang e Qian Li. "Wetting Behavior of Polymer Melts on Bulk Metallic Glasses". Applied Mechanics and Materials 404 (settembre 2013): 25–31. http://dx.doi.org/10.4028/www.scientific.net/amm.404.25.

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Abstract (sommario):

The wetting behavior of polymer melts such as HDPE, PP, PC, POM and COC on bulk metallic glass material substrates that are used in polymer micro fabrication like micro injection molding was investigated by sessile drop method at a temperature above the corresponding melting temperatures. Contact wetting angles have been determined on three kinds of bulk metallic glasses: Pd40Cu30Ni10P20, Zr64.8Cu15.5Al8.3Ni11.4and La57.5Al17.5Ni12.5Cu12.5. The equilibrium contact angle has the monotone decrease with the increasing temperature for most polymer melts. Two kinds of wetting behaviors are observed, spanning from 126°, over neutral wetting, to 6°, almost complete wetting. Estimations of the contact wetting angles are presented in different polymer melt temperature. Optimization of process parameter can be chosen according to the wetting ability.

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Bryk, Paweł, e Artur P. Terzyk. "Chasing the Critical Wetting Transition. An Effective Interface Potential Method". Materials 14, n. 23 (24 novembre 2021): 7138. http://dx.doi.org/10.3390/ma14237138.

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Abstract (sommario):

Wettablity is one of the important characteristics defining a given surface. Here we show that the effective interface potential method of determining the wetting temperature, originally proposed by MacDowell and Müller for the surfaces exhibiting the first order wetting transition, can also be used to estimate the wetting temperature of the second order (continuous) wetting transition. Some selected other methods of determination of the wetting temperature are also discussed.

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