Capillary Filling of Anodized Alumina Nanopore Arrays

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Capillary Filling of Anodized Alumina Nanopore Arrays

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Title: Capillary Filling of Anodized Alumina Nanopore Arrays
Author: Alvine, Kyle J.; Shpyrko, Oleg G.; Pershan, Peter S.; Shin, Kyusoon; Russell, Thomas P.

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Citation: Alvine, 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).
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Abstract: The 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.
Published Version: doi:10.1103/PhysRevLett.97.175503
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