caa a22 4500 445366729 CHVBK 20180317142932.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10909-011-0350-4 doi (NATIONALLICENCE)springer-10.1007/s10909-011-0350-4 Expansion or Contraction of Slit Pores Due to Gas Uptake [Elektronische Daten] [F. Ancilotto, M. Cole, A. Grosman, E. Hernández, F. Toigo] Adsorption inside a slit pore of flexible width w is explored, with a focus on how w varies as a function of the external pressure P of a gas in equilibrium with the adsorbate within the pore. The analysis is first carried out in general, using a minimization of the thermodynamic grand potential energy of the system. This leads to an equation predicting both the gas uptake N as a function of chemical potential μ and the expansion (or contraction) of the pore in response to the adsorbate's pressure. The resulting equilibrium behavior depends on the elastic parameters of the host material. Explicit results are derived for three adsorption systems: a low density fluid, Ar (a classical fluid at finite temperature T) in a graphite pore and 4He within a Au pore at T=0. The resulting behaviors include some situations where the pore expands and others for which it contracts. The difference arises from the sign of the thermodynamic response of the fluid as a function of slit width. Springer Science+Business Media, LLC, 2011 Physisorption in pores nationallicence Capillary condensation nationallicence Imbibition nationallicence Ancilotto F. Department of Physics, University of Padua, via Marzolo 8, Padua, Italy aut Cole M. Department of Physics, Penn State University, 16802, University Park, PA, USA aut Grosman A. Institut des NanoSciences de Paris, Université Pierre et Marie Curie, UMR7588, 4 Place Jussieu, 75005, Paris, France aut Hernández E. Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, and Consejo Nacional de Investigaciones Científicas y Técnicas, 1428, Buenos Aires, Argentina aut Toigo F. Department of Physics, University of Padua, via Marzolo 8, Padua, Italy aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 163/5-6(2011-06-01), 284-301 0022-2291 163:5-6<284 2011 163 10909 https://doi.org/10.1007/s10909-011-0350-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-011-0350-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ancilotto F. Department of Physics, University of Padua, via Marzolo 8, Padua, Italy aut NATIONALLICENCE 700 1- Cole M. Department of Physics, Penn State University, 16802, University Park, PA, USA aut NATIONALLICENCE 700 1- Grosman A. Institut des NanoSciences de Paris, Université Pierre et Marie Curie, UMR7588, 4 Place Jussieu, 75005, Paris, France aut NATIONALLICENCE 700 1- Hernández E. Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, and Consejo Nacional de Investigaciones Científicas y Técnicas, 1428, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Toigo F. Department of Physics, University of Padua, via Marzolo 8, Padua, Italy aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 163/5-6(2011-06-01), 284-301 0022-2291 163:5-6<284 2011 163 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer