Glassy photomechanical liquid-crystal network actuators for microscale devices

C.L. Oosten, van, K.D. Harris, C.W.M. Bastiaansen, D.J. Broer

Research output: Contribution to journalArticleAcademicpeer-review

160 Citations (Scopus)
13 Downloads (Pure)

Abstract

In light-driven liquid-crystal network (LCN) actuators, large performance improvements are obtained by varying the orientation of the molecular director through the thickness of the film actuator. Experiments show that sub-millimeter bending radii are achieved using a splayed molecular orientation. Systems with a splayed or twisted nematic (TN) director profile drive greater amplitude and faster bending than uniaxial planar systems with the same chemical composition. The bending radii of these systems are predicted using a simple model including effects of light intensity, material composition and actuator thickness. © 2007 EDP Sciences, Società Italiana di Fisica and Springer-Verlag.
Original languageEnglish
Pages (from-to)329-336
JournalEuropean Physical Journal E : Soft Matter
Volume23
Issue number3
DOIs
Publication statusPublished - 2007

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