Interface: Difference between revisions

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{{Stub-general}}
{{Stub-general}}
An interface is the region that separates two bulk phases. An interface is a molecular
An interface is the region that separates two bulk phases. An interface is a molecular
structure, given that one of its characteristic lengths is of molecular size. The cost
structure, given that one of its characteristic lengths is of molecular size. The cost
in [[Helmholtz energy function | Helmholtz energy]] to create such a structure is known as the the [[surface tension]].
in terms of the [[Helmholtz energy function | Helmholtz energy]] to create such a structure is known as the the [[surface tension]].
The simplest, most studied, and perhaps most important interface is the
The simplest, most studied, and perhaps most important interface is the
fluid/fluid interface: the liquid/vapour interface of a one-component system.
fluid/fluid interface: the liquid/vapour interface of a one-component system.
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[[diffusion at interfaces]].
[[diffusion at interfaces]].
==References==
==References==
#[http://dx.doi.org/10.1080/00018737900101365 R. Evans "The nature of the liquid-vapour interface and other topics in the statistical mechanics of non-uniform, classical fluids" Adv. Phys. '''28''' pp. 143-200 (1979) ]
#[http://dx.doi.org/10.1080/00018737900101365 R. Evans "The nature of the liquid-vapour interface and other topics in the statistical mechanics of non-uniform, classical fluids", Advances in Physics '''28''' pp. 143-200 (1979) ]
[[Category: Confined systems]]
[[Category: Confined systems]]

Revision as of 13:58, 4 December 2007

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An interface is the region that separates two bulk phases. An interface is a molecular structure, given that one of its characteristic lengths is of molecular size. The cost in terms of the Helmholtz energy to create such a structure is known as the the surface tension. The simplest, most studied, and perhaps most important interface is the fluid/fluid interface: the liquid/vapour interface of a one-component system.

Interfaces are subject to thermal noise, which leads to thermal capillary waves. See also diffusion at interfaces.

References

  1. R. Evans "The nature of the liquid-vapour interface and other topics in the statistical mechanics of non-uniform, classical fluids", Advances in Physics 28 pp. 143-200 (1979)