Direct observation of cooperative effects in capillary condensation: The hysteretic origin

被引：42

作者：

Casanova, Felix ^{[1
]}

Chiang, Casey E. ^{[1
]}

Li, Chang-Peng ^{[1
]}

Schuller, Ivan K. ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 24期

关键词：

D O I：

10.1063/1.2822815

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We tailor anodized alumina with pores with well-defined, simple geometries, in order to study the effects of constrictions in hysteretical capillary condensation, independently from other cooperative processes such as network effects. We confirm, by direct observation using optical interferometry, the occurrence of two cooperative phenomena: the classical pore blocking effect in nearly ideal "inkbottle" pores and the advanced adsorption in pores with a change in the cross section. They are relevant for the development of a theory of the poorly understood hysteresis in complex porous materials. (C) 2007 American Institute of Physics.

引用

页数：3

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