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Adv Mater. 2013 Nov 6;25(41):5880-5. doi: 10.1002/adma.201301891. Epub 2013 Jul 21.

Topography from topology: photoinduced surface features generated in liquid crystal polymer networks.

Author information

1
Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way, WPAFB, OH, 45434, USA.

Abstract

Films subsumed with topological defects are transformed into complex, topographical surface features with light irradiation of azobenzene-functionalized liquid crystal polymer networks (azo-LCNs). Using a specially designed optical setup and photoalignment materials, azo-LCN films containing either singular or multiple defects with strengths ranging from |½| to as much as |10| are examined. The local order of an azo-LCN material for a given defect strength dictates a complex, mechanical response observed as topographical surface features.

KEYWORDS:

azobenzene; liquid crystalline polymer; liquid crystals; stimuli responsive materials

PMID:
23873775
DOI:
10.1002/adma.201301891
[Indexed for MEDLINE]

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