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'''Reverse diffusion''' refers to a situation where the transport of particles (atoms or molecules) in a medium occurs towards regions of higher concentration gradients, opposite to that observed during diffusion. This phenomenon occurs during phase separation and is described by the Cahn–Hilliard equation.<ref>{{Cite journal|last1=Cahn|first1=John W.|last2=Hilliard|first2=John E.|date=February 1958|title=Free Energy of a Nonuniform System. I. Interfacial Free Energy|url=http://aip.scitation.org/doi/10.1063/1.1744102|journal=The Journal of Chemical Physics|language=en|volume=28|issue=2|pages=258–267|doi=10.1063/1.1744102|bibcode=1958JChPh..28..258C |issn=0021-9606|url-access=subscription}}</ref> '''Reverse diffusion''' also refers to when water is forced from a region of lower concentration to high. It can occur in osmosis.
==See also==
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==References== {{reflist}}
{{DEFAULTSORT:Reverse Diffusion}} Category:Diffusion
{{physiology-stub}} {{Physics-stub}}