CUED Publications database

Spontaneous formation of highly ordered nanostructures: thermal instability and mode selection in surface-capped polymer films.

Li, SP and Chu, DP and Koltsov, DK and Fu, YT and Welland, ME (2008) Spontaneous formation of highly ordered nanostructures: thermal instability and mode selection in surface-capped polymer films. Nanotechnology, 19. 235302-. ISSN 0957-4484

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Abstract

We demonstrate a controllable formation process of wave-like patterns in thermally unstable surface-capped polymer films on a rigid substrate. Self-ordered wave-like structures over a large area can be created by applying a small lateral tension to the film, whereupon it becomes unstable. A clear mode selection process which includes creation, decay and interference between coexisting waves at different annealing conditions has been observed, which makes it possible to restrain the patterns which are formed finally. Our results provide a clear and new evidence of spinodal behaviour in such a film due to thermal instability. Furthermore, we show that the well-controlled patterns generated in such a process can be used to fabricate nanostructures for various applications.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:33
Last Modified: 27 Nov 2014 19:21
DOI: 10.1088/0957-4484/19/23/235302