Formation of micro/nano-scale wrinkling patterns atop shape memory polymers

Zhao, Y., Huang, Wei Min and Fu, Yong Qing (2011) Formation of micro/nano-scale wrinkling patterns atop shape memory polymers. Journal of Micromechanics and Microengineering, 21 (6). 067007. ISSN 0960-1317

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Official URL: http://dx.doi.org/10.1088/0960-1317/21/6/067007

Abstract

Wrinkling patterns in shape memory polymer (SMP) sputter deposited with a thin layer (10 s nm in thickness) of gold atop are systematically investigated under various conditions. Depending on the surface condition, heating temperature and pre-straining, different patterns of micro/nano-scaled wrinkles are produced. Although elastic buckling of the gold layer is the mechanism behind all types of wrinkles, the shape memory effect (SME) and thermal expansion mismatch (TEM) are the driving force for different patterns after heating to different temperatures, i.e. the evolution of wrinkle pattern is due to the SME after heating to low temperatures and the TEM after heating to high temperatures. The flexibility and convenience in using SMP to achieve different wrinkling patterns is demonstrated.

Item Type: Article
Subjects: F200 Materials Science
Department: Faculties > Engineering and Environment > Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 23 Mar 2015 11:07
Last Modified: 07 Mar 2016 14:25
URI: http://nrl.northumbria.ac.uk/id/eprint/21676

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