Nanoscale Shape-Memory Function in Highly Cross-Linked Polymers

被引：47

作者：

Altebaeumer, T. ^{[1
]}

Gotsmann, B. ^{[1
]}

Pozidis, H. ^{[1
]}

Knoll, A. ^{[1
]}

Duerig, U. ^{[1
]}

机构：

[1] IBM Res GmbH, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland

来源：

NANO LETTERS | 2008年 / 8卷 / 12期

关键词：

D O I：

10.1021/nl8022737

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Topographic engraving of structures in polymer surfaces attracts widespread interest for application in imprint lithography and data storage. We study the nonlinear interaction of nanoindents written in close proximity, 20-100 nm, to one another in a highly cross-linked polystyrene matrix. The indents are created thermomechanically by applying heat and force stimuli of 10 mu s duration to a tip, thereby raising the polymer temperature to 250 degrees C and exerting contact pressures of up to 1 GPa. We show that on the nanoscale plastic deformation is highly reversible providing outstanding shape-memory functionality of the material.

引用

页码：4398 / 4403

页数：6

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