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Fluid interface : ウィキペディア英語版
Interface (chemistry)

An interface is a surface forming a common boundary among two different phases of matter, such as an insoluble solid and a liquid, two immiscible liquids, a liquid and an insoluble gas or a liquid and vacuum. The importance of the interface depends on the type of system: the bigger the quotient area/volume, the more effect the surface phenomena will have. Therefore, interfaces are very important in systems with big area to volume ratios, such as colloids.
Interfaces can be flat or curved. For example, oil droplets in a salad dressing are spherical but the interface between water and air in a glass of water is mostly flat.
Surface tension is the function which rules interface processes involving liquids. For a liquid film on flat surfaces, the liquid-vapor interface keeps flat to minimize interfacial area and system free energy. For a liquid film on rough surfaces, the surface tension tends to keep the meniscus flat, while the disjoining pressure makes the film conformal to the substrate. The equilibrium meniscus shape is a result of the competition between the capillary pressure and disjoining pressure.〔(Han Hu, Christopher R. Weinberger, and Ying Sun Nano Lett., 14 (12), pp 7131–7137 (2014) )〕
Interfaces may cause various optical phenomena, such as refraction. Optical lenses serve as an example of a practical application of the interface between glass and air.
One important interface is the gas liquid interface between aerosols and other atmospheric molecules.
==See also==

* Surface science
* Surface tension
* Membrane (disambiguation)
* Capillary surface, a surface that represents the boundary between two fluids
* Disjoining pressure

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Interface (chemistry)」の詳細全文を読む



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