Adsorption of Helium in a Deformed Pore

The adsorption potential in the interior of an infinite nanopore along the z -axis, with varying radius R ( z ), is derived as a function of a deformation parameter. Detailed calculations for a carbon nanotube indicate that according to the magnitude of the deformation the potential landscape can be...

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Bibliographic Details
Published in:Journal of low temperature physics 2011-03, Vol.162 (5-6), p.590-596
Main Author: Hernandez, E S
Format: Article
Language:English
Subjects:
Adsorption
Characterization and Evaluation of Materials
Condensed Matter Physics
Confining
Deformation
Instability
Low temperature physics
Magnetic Materials
Magnetism
Nanostructure
Physics
Physics and Astronomy
Porosity
Stability
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Description
Summary:The adsorption potential in the interior of an infinite nanopore along the z -axis, with varying radius R ( z ), is derived as a function of a deformation parameter. Detailed calculations for a carbon nanotube indicate that according to the magnitude of the deformation the potential landscape can be substantially modified, giving rise to regions of weakened confining strength, and even changing the nature of the minima. This modified field may induce thermodynamic instabilities in the adsorbed fluid. A similar situation takes place for other materials, such as alkaline pores with variable cross-section. A general argument can be provided that explains the origin of such instabilities.
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-010-0262-8