Switching properties in Siloxane-based Liquid-crystal Elastomer

Khalid AL-Ammar

Abstract


Mechanical and X-ray scattering measurements on a side-chain liquid-crystal elastomer based on a Siloxane backbone are presented. The application of a stress field to the elastomer while in the nematic phase result in a stress-induced alignment of the mesogenic units in the direction of the extension. Extensions as low as 2% result in appreciable molecular alignment. The similarities of these effects with those observed in electric and magnetic fields are outlined.

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