Capillary filling of anodized alumina nanopore arrays

被引：35

作者：

Alvine, Kyle J.

Shpyrko, Oleg G.

Pershan, Peter S.

Shin, Kyusoon

Russell, Thomas P.

机构：

[1] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA

[3] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[4] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul, South Korea

[5] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 17期

基金：

美国国家科学基金会;

关键词：

VAPOR-PRESSURE; CONDENSATION; FILMS;

D O I：

10.1103/PhysRevLett.97.175503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

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