Effects of Polymer Network Surfaces on Expansion of Cholesteric Blue Phases Temperature

Takeshi Noma; Masayoshi Ojima; Hiroaki Asagi; Yuichi Kawahira; Akihiko Fujii; Masanori Ozaki; Hirotsugu Kikuchi

doi:10.1380/ejssnt.2008.17

Conference -Handai Nano 2007-

Effects of Polymer Network Surfaces on Expansion of Cholesteric Blue Phases Temperature

Takeshi Noma, Masayoshi Ojima, Hiroaki Asagi, Yuichi Kawahira, Akihiko Fujii, Masanori Ozaki, Hirotsugu Kikuchi

Author information

Takeshi Noma
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Japan
Masayoshi Ojima
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Japan
Hiroaki Asagi
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Japan
Yuichi Kawahira
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Japan
Akihiko Fujii
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Japan
Masanori Ozaki
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Japan
Hirotsugu Kikuchi
Institute for Materials Chemistry and Engineering, Kyushu University, Japan

Keywords: Liquid Crystal, Cholesteric Blue Phase, Polymer Dispersed Liquid Crystal, Polymer Network, Pinning Effect

JOURNAL FREE ACCESS

2008 Volume 6 Pages 17-20

DOI https://doi.org/10.1380/ejssnt.2008.17

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Abstract

We proposed the stabilization of cholesteric blue phases (BPs) by confining liquid crystal (LC) molecules within a small area. The temperature range of the BP was expanded in the LC confined in the polymer network (PN). In particular, the temperature range of BP I in the LC/PN composite is six times wider than that of the pure BP LC compound. Polarizing microscopic observations and field-dependence measurements of the expanded BP have been carried out, which indicate that it is in the metastable state and is induced by the pinning effect on the surfaces of the PN. [DOI: 10.1380/ejssnt.2008.17]

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