Alvine, Kyle J.Shpyrko, Oleg G.Pershan, PeterShin, KyusoonRussell, Thomas P.2011-02-162006Alvine, Kyle J., Oleg G. Shpyrko, Peter S. Pershan, Kyusoon Shin, and Thomas P. Russell. 2006. Capillary filling of anodized alumina nanopore arrays. Physical Review Letters 97(175503).0031-9007http://nrs.harvard.edu/urn-3:HUL.InstRepos:4726295The filling behavior of a room temperature solvent, perfluoromethylcyclohexane, in approximately 20 nm nanoporous alumina membranes was investigated in situ with small angle x-ray scattering. Adsorption in the pores was controlled reversibly by varying the chemical potential between the sample and a liquid reservoir via a thermal offset, ΔT. The system exhibited a pronounced hysteretic capillary filling transition as liquid was condensed into the nanopores. These results are compared with Kelvin-Cohan theory, with a modified Derjaguin approximation, as well as with predictions by Cole and Saam.en-USJournal Article10.1103/PhysRevLett.97.175503