Journal
BIOMATERIALS
Volume 34, Issue 13, Pages 3159-3164Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2013.01.020
Keywords
Artificial iris; Self-regulation; Spoke patterns; Reversible photoreaction
Funding
- Samsung Display Co. Ltd.
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We report a scalable artificial iris with self-regulating spoke patterns of a liquid crystalline polymer that resemble the iris frills of the human eye. The underlying concept relies primarily on the reversible photoinduced conformation change of spiropyran dyes embedded in a transparent polymer. The spoke patterns around the scalable pupil, defined by selective wetting inscription, were produced using reactive liquid crystalline mesogens on a flexible substrate through polymerization. The self-regulation capability of our artificial iris, not requiring driving circuits and peripheral sensors, plays a central role in developing a new class of biomedical and photonic devices in a monolithic architecture. (C) 2013 Elsevier Ltd. All rights reserved.
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