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Wetting information


Close-up of a drop of water (almost spherical) on blue fabric, with a shadow under it
Water bead on a fabric that has been made non-wetting by chemical treatment.

Wetting is the ability of a liquid to displace gas to maintain contact with a solid surface, resulting from intermolecular interactions when the two are brought together.[1] This happens in presence of a gaseous phase or another liquid phase not miscible with the first one. The degree of wetting (wettability) is determined by a force balance between adhesive and cohesive forces. There are two types of wetting: non-reactive wetting and reactive wetting.[2][3]

Wetting is important in the bonding or adherence of two materials.[4] Wetting and the surface forces that control wetting are also responsible for other related effects, including capillary effects. Surfactants can be used to increase the wetting power of a liquid like water.

Wetting is a focus of research attention in nanotechnology and nanoscience studies due to the advent of many nanomaterials in the past two decades (e.g. graphene,[5] carbon nanotube, boron nitride nanomesh[6]).

  1. ^ Carroll, Gregory T.; Turro, Nicholas J.; Mammana, Angela; Koberstein, Jeffrey T. (2017). "Photochemical Immobilization of Polymers on a Surface: Controlling Film Thickness and Wettability". Photochemistry and Photobiology. 93 (5): 1165–1169. doi:10.1111/php.12751. ISSN 0031-8655.
  2. ^ Dezellus, O.; Eustathopoulos, N. (2010). "Fundamental issues of reactive wetting by liquid metals" (PDF). Journal of Materials Science. 45 (16): 4256–4264. Bibcode:2010JMatS..45.4256D. doi:10.1007/s10853-009-4128-x. S2CID 4512480.
  3. ^ Hu, Han; Ji, Hai-Feng; Sun, Ying (2013). "The effect of oxygen vacancies on water wettability of a ZnO surface". Physical Chemistry Chemical Physics. 15 (39): 16557–65. Bibcode:2013PCCP...1516557H. doi:10.1039/C3CP51848E. PMID 23949186. S2CID 205850095.
  4. ^ Amziane, Sofiane; Collet, Florence (2017-03-05). Bio-aggregates Based Building Materials: State-of-the-Art Report of the RILEM Technical Committee 236-BBM. Springer. ISBN 9789402410310.
  5. ^ Rafiee, J.; Mi, X.; Gullapalli, H.; Thomas, A. V.; Yavari, F.; Shi, Y.; Ajayan, P. M.; Koratkar, N. A. (2012). "Wetting transparency of graphene" (PDF). Nature Materials. 11 (3): 217–22. Bibcode:2012NatMa..11..217R. doi:10.1038/nmat3228. PMID 22266468. Archived from the original (PDF) on 2017-11-15.
  6. ^ Mertens, Stijn F. L.; Hemmi, Adrian; Muff, Stefan; Gröning, Oliver; De Feyter, Steven; Osterwalder, Jürg; Greber, Thomas (2016). "Switching stiction and adhesion of a liquid on a solid" (PDF). Nature. 534 (7609): 676–679. Bibcode:2016Natur.534..676M. doi:10.1038/nature18275. PMID 27357755. S2CID 205249367. Archived from the original (PDF) on 2019-04-11.

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Wetting

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Omorashi

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bladder and potentially wetting themselves, or from witnessing another person in that situation. While urinary desperation and "wetting" fetishes are not inherently...

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Urolagnia

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Other variations include arousal from wetting or seeing someone else urinate in their pants or underclothes, or wetting the bed. Other forms of urolagnia...

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Nocturnal enuresis

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being dry. Secondary nocturnal enuresis is when a child or adult begins wetting again after having stayed dry. Treatments range from behavioral therapy...

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Wetting layer

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A wetting layer is an monolayer of atoms that is epitaxially grown on a flat surface. The atoms forming the wetting layer can be semimetallic elements/compounds...

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Wetting current

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In electrical and electronics engineering, wetting current is the minimum electric current needing to flow through a contact to break through the surface...

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Surfactant

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as detergents and cleaning agents, but also for example as emulsifiers, wetting agents, foaming agents, antistatic additives, or dispersants. Surfactants...

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Solderability

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soldered joint can be made to that material. Good solderability requires wetting (low contact angle) of the substrate by the solder. Solderability varies...

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Wetting solution

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Wetting solutions are liquids containing active chemical compounds that minimise the distance between two immiscible phases by lowering the surface tension...

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Surface energy

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completely wets the substrate. If 0° < θ < 90°, high wetting occurs. If 90° < θ < 180°, low wetting occurs. If θ = 180°, the liquid does not wet the substrate...

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Wetting transition

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A wetting transition (Cassie–Wenzel transition) may occur during the process of wetting of a solid (or liquid) surface with a liquid. The transition corresponds...

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Contact angle

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With the reduction in droplet size came new experimental observations of wetting. These observations confirmed that the modified Young's equation does not...

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Alternate wetting and drying

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Alternate wetting and drying (AWD) is a water management technique, practiced to cultivate irrigated lowland rice with much less water than the usual...

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Brazing

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usually a flux. It then flows over the base metal (in a process known as wetting) and is then cooled to join the work pieces together. A major advantage...

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Electrowetting

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Electrowetting is the modification of the wetting properties of a surface (which is typically hydrophobic) with an applied electric field. The electrowetting...

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Diurnal enuresis

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Diurnal enuresis is daytime wetting (functional daytime urinary incontinence). Nocturnal enuresis is nighttime wetting. Enuresis is defined as the involuntary...

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Imbibition

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occurs when a wetting fluid displaces a non-wetting fluid, the opposite of drainage in which a non-wetting phase displaces the wetting fluid. The two...

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Titanium biocompatibility

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surface texture, steric hindrance, binding sites, and hydrophobicity (wetting). These characteristics are optimized to create an ideal cellular response...

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Switch

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roughness and contact pressure, determine the contact resistance, and wetting current of a mechanical switch. Sometimes the contacts are plated with...

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Invasion percolation

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account the transport process taking place". A wetting fluid such as water takes over from a non-wetting fluid such as oil, and capillary forces are taken...

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Capillary flow porometry

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porometry, is a characterization technique based on the displacement of a wetting liquid from the sample pores by applying a gas at increasing pressure....

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Wet

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Look up wet, wetness, or wetting in Wiktionary, the free dictionary. Wet may refer to: Moisture, the condition of containing liquid or being covered or...

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Capillary pressure

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non-wetting phase {\displaystyle p_{\text{non-wetting phase}}} is the pressure of the non-wetting phase p wetting phase {\displaystyle p_{\text{wetting phase}}}...

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2023 Cricket World Cup

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occurred in the 2021 Men's T20 World Cup). These included using a specific wetting agent, and the boundary set at around 70 m (77 yards) at each stadium,...

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Polysorbate 20

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product containing a range of chemical species. Polysorbate 20 is used as a wetting agent in flavored mouth drops such as Ice Drops, helping to provide a spreading...

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Solder

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addition of tin—more expensive than lead—improves wetting properties of the alloy; lead itself has poor wetting characteristics. High-tin tin-lead alloys have...

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Synthetic membrane

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known as wetting phenomena, which is important to characterize the capillary (pore) intrusion behavior. Degree of membrane surface wetting is determined...

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Enuresis

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flow that do not completely relax. Symptoms may include daytime wetting, night wetting, urgency, a feeling that the bladder is always full, and straining...

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