Capillary Filling of Anodized Alumina Nanopore Arrays

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, $\Delta$T. 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.

4 pages, 3 figures, pre-proofs

References in corpus (2)

• DNA in nanopore-counterion condensation and coion depletion
• Solvent Mediated Assembly of Nanoparticles Confined in Mesoporous Alumina

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