Stiffness, Strength, and Ductility of Nanoscale Thin Films and Membranes: A Combined Wrinkling-Cracking Methodology

被引：129

作者：

Chung, Jun Young ^{[1
]}

Lee, Jung-Hyun ^{[1
]}

Beers, Kathryn L. ^{[1
]}

Stafford, Christopher M. ^{[1
]}

机构：

[1] NIST, Div Polymers, Gaithersburg, MD 20899 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 08期

关键词：

Mechanical properties; nanometrology; nanoscale materials; surface wrinkling; thin-film cracking; membranes; MECHANICAL-PROPERTIES; WATER-PURIFICATION; DEGRADATION;

D O I：

10.1021/nl201764b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We establish and validate a measurement method based on wrinkling-cracking phenomena that allows unambiguous measurements of three fundamental mechanical properties in nanoscale thin film geometries, including elastic modulus, strength, and fracture strain. In addition to polymer and metal thin films, the method is applied to the active nanolayers of a composite reverse osmosis membrane before and after chlorination, illustrating the ability to detect a ductile-to-brittle transition in these materials indicative of "embrittlement", a behavior that impairs long-term durability and is detrimental to membrane performance.

引用

页码：3361 / 3365

页数：5

共 34 条

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