Condensation in a capped capillary is a continuous critical phenomenon

A O Parry, C Rascon, N B Wilding, R Evans

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

We show that condensation in a capped capillary slit is a continuous interfacial critical phenomenon, related intimately to several other surface phase transitions. In three dimensions, the adsorption and desorption branches correspond to the unbinding of the meniscus from the cap and opening, respectively, and are equivalent to 2D-like complete-wetting transitions. For dispersion forces, the singularities on the two branches are distinct, owing to the different interplay of geometry and intermolecular forces. In two dimensions we establish precise connection, or covariance, with 2D critical-wetting and wedge-filling transitions: i.e., we establish that certain interfacial properties in very different geometries are identical. Our predictions of universal scaling and covariance in finite capillaries are supported by extensive Ising model simulation studies in two and three dimensions.
Original languageEnglish
Article number226101
JournalPhysical Review Letters
Volume98
Issue number22
DOIs
Publication statusPublished - 1 Jun 2007

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condensation
wetting
intermolecular forces
menisci
geometry
caps
wedges
Ising model
slits
desorption
scaling
adsorption
predictions
simulation

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Condensation in a capped capillary is a continuous critical phenomenon. / Parry, A O; Rascon, C; Wilding, N B; Evans, R.

In: Physical Review Letters, Vol. 98, No. 22, 226101, 01.06.2007.

Research output: Contribution to journalArticle

Parry, A O ; Rascon, C ; Wilding, N B ; Evans, R. / Condensation in a capped capillary is a continuous critical phenomenon. In: Physical Review Letters. 2007 ; Vol. 98, No. 22.
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