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Novel insights into nanopore deformation caused by capillary condensation.
MedLine Citation:
PMID:  18764642     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
By means of in situ small-angle x-ray diffraction experiments and semi-grand-canonical ensemble Monte Carlo simulations we demonstrate that sorption and condensation of a fluid confined within nanopores is capable of deforming the pore walls. At low pressures the pore is widened due to a repulsive interaction caused by collisions of the fluid molecules with the walls. At capillary condensation the pores contract abruptly on account of attractive fluid-wall interactions whereas for larger pressures they expand again. These features cannot solely be accounted for by effects related to pore-wall curvature but have to be attributed to fluid-wall dispersion forces instead.
Authors:
Gerrit Günther; Johannes Prass; Oskar Paris; Martin Schoen
Publication Detail:
Type:  Journal Article     Date:  2008-08-22
Journal Detail:
Title:  Physical review letters     Volume:  101     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2008 Aug 
Date Detail:
Created Date:  2008-09-03     Completed Date:  2008-10-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  086104     Citation Subset:  -    
Affiliation:
Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin.
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