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Proceedings Paper

Polarization dependent photoactuation in azobenzene LC polymers
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Paper Abstract

We report on the photoactuation of high modulus liquid crystalline polymers with side chain azobenzene mesogens (azo-LCP). Photomechanical deformation is actuated with the 442 nm line of a He-Cd laser. Early results show that this system achieves displacement of up to 85° towards the actinic source when the He-Cd polarization is parallel to the nematic director and approximately 30-40° when the polarization is orthogonal to the nematic director. A wide range of materials have been synthesized by the photopolymerization of a liquid crystal diacrylate monomer (RM257) and an azobenzene-containing monoacrylate liquid crystalline monomer. Interestingly, azo-LCP formed with holographic photopolymerization have faster bending rates than polymers formed with flood-lit illumination of equivalent intensity.

Paper Details

Date Published: 12 September 2007
PDF: 5 pages
Proc. SPIE 6654, Liquid Crystals XI, 665403 (12 September 2007); doi: 10.1117/12.734670
Show Author Affiliations
Timothy J. White, Air Force Research Lab. (United States)
General Dynamics Information Technology (United States)
J. J. Koval, Air Force Research Lab. (United States)
Univ. of Illinois (United States)
V. P. Tondiglia, Air Force Research Lab. (United States)
Science Applications International Corp. (United States)
L. V. Natarajan, Air Force Research Lab. (United States)
Science Applications International Corp. (United States)
R. A. Vaia, Air Force Research Lab. (United States)
S. Serak, Beam Co. (United States)
V. Grozhik, Beam Co. (United States)
N. Tabirian, Beam Co. (United States)
Timothy J. Bunning, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 6654:
Liquid Crystals XI
Iam Choon Khoo, Editor(s)

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