Condensation in a Capillary is a Continuous Critical Phenomenon

AO Parry, C Rascon, NB Wilding, R Evans

Research output: Contribution to journalArticle (Academic Journal)peer-review

68 Citations (Scopus)


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.
Translated title of the contributionCondensation in a Capillary is a Continuous Critical Phenomenon
Original languageEnglish
Article number226101
Number of pages4
JournalPhysical Review Letters
Publication statusPublished - 27 May 2007


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