Giving to CREOL CREOL, The College of Optics & Photonics

"Photoresponsive Liquid-Crystalline Polymers" by Atsushi Shishido, Ph.D.

Friday, May 31, 2013 11:00 AM to 12:00 PM
CREOL Room 102

Atsushi Shishido, Ph.D.
Associate Professor
Chemical Resources Laboratory, Tokyo Institute of Technology

We report linear and crosslinked azobenzene containing liquid-crystalline polymers which can be applied to high-density optical storage and photomechanical analysis. We introduced a molecular design concept of multicomponent systems composed of photoresponse, refactive-index change amplification, and transparency units. Taking advantage of characteristics of liquid crystals (optical anisotropy and cooperative motion), polarization holograms were recorded, which enabled us higher-density holographic storage. On the other hand, crosslinked liquid-crystalline azobenzene polymer films were fabricated to investigate the photomechanical behavior. We have found that a large change in Young’s modulus is induced by several mol%-cis form production. Furthermore, a unique bending behavior, which cannot be explained by the conventional bending mechanism, was observed in the crosslinked liquid-crystalline polymer films with azobenzene in the side chain.

For more information:
Ivan Divliansky
Senior Research Scientist
(407) 823-6827  

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