Manipulation of small objects in liquid crystals by dynamical disorganizing effect of push-pull-azobenzene-dye

Yutaka Kuwahara; Takahiro Oda; Ryo Izumi; Tomonari Ogata; Sun-Nam Kim; Seiji Kurihara

doi:10.1117/12.2038665

19 February 2014 Manipulation of small objects in liquid crystals by dynamical disorganizing effect of push-pull-azobenzene-dye

Yutaka Kuwahara, Takahiro Oda, Ryo Izumi, Tomonari Ogata, Sun-Nam Kim, Seiji Kurihara

Author Affiliations +

Proceedings Volume 9004, Emerging Liquid Crystal Technologies IX; 90040P (2014) https://doi.org/10.1117/12.2038665
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

A few research group reports formation of ordered structures of colloidal particles due to topological defects in a nematic liquid crystal. In this paper, we describe the photochemical phase transition of a nematic liquid crystal by the photoisomerization of azobenzene dyes, focusing especially on the dynamical effect of the trans–cis–trans photoisomerization cycle of a push-pull azobenzene dye. Then, we discuss the effects of light irradiation on the motion of small objects dispersed in the nematic and smectic liquid crystals contatining a push-pull azobenzene dye, and successfully manipulate those objects by pushing, trapping and dragging them.

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Yutaka Kuwahara, Takahiro Oda, Ryo Izumi, Tomonari Ogata, Sun-Nam Kim, and Seiji Kurihara "Manipulation of small objects in liquid crystals by dynamical disorganizing effect of push-pull-azobenzene-dye", Proc. SPIE 9004, Emerging Liquid Crystal Technologies IX, 90040P (19 February 2014); https://doi.org/10.1117/12.2038665

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