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Proceedings Paper

Manipulation of small objects in liquid crystals by dynamical disorganizing effect of push-pull-azobenzene-dye
Author(s): Yutaka Kuwahara; Takahiro Oda; Ryo Izumi; Tomonari Ogata; Sun-Nam Kim; Seiji Kurihara
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Paper 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.

Paper Details

Date Published: 19 February 2014
PDF: 7 pages
Proc. SPIE 9004, Emerging Liquid Crystal Technologies IX, 90040P (19 February 2014); doi: 10.1117/12.2038665
Show Author Affiliations
Yutaka Kuwahara, Kumamoto Univ. (Japan)
Kumamoto Institute for Photo-Electro Organics (Japan)
Takahiro Oda, Kumamoto Univ. (Japan)
Ryo Izumi, Kumamoto Univ. (Japan)
Tomonari Ogata, Kumamoto Univ. (Japan)
Sun-Nam Kim, Kumamoto Univ. (Japan)
Seiji Kurihara, Kumamoto Univ. (Japan)
Kumamoto Institute for Photo-Electro Organics (Japan)
JST-CREST (Japan)


Published in SPIE Proceedings Vol. 9004:
Emerging Liquid Crystal Technologies IX
Liang-Chy Chien; Antonio M. Figueiredo Neto; Kristiaan Neyts; Masanori Ozaki, Editor(s)

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