Three-dimensional crystal orientation of blue phase liquid crystals on surfaces

H. Yoshida, M. Takahashi, T. Ohkawa, Junichi Fukuda, Hirotsugu Kikuchi, M. Ozaki

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

Liquid crystalline cholesteric blue phases (BPs) are of high interest for tunable electro-optic applications owing to their fast response times and quasi-polarization-independent phase modulation capabilities. Various approaches have recently been proposed to control the crystal orientation of BPs on substrates, but their basic orientation properties on standard, unidirectionally orienting substrates had not been investigated in detail. Here, detailed studies have been made on the Kossel diagrams of BPs on unidirectionally orienting substrates to understand the three-dimensional crystal orientation of BPs. We find that BPs show strong thermal hysteresis and that the structure of the preceding phase determines the orientation of BPs. Specifically, the BP II-I transition is accompanied by a rotation of the crystal such that the crystal direction defined by certain low-value Miller indices transform into different directions, and within the allowed rotations, different azimuthal configurations are obtained in the same cell depending on the thermal process. Our findings demonstrate that, for the alignment control of BPs, the thermal process is as important as the properties of the alignment layer.

元の言語英語
ホスト出版物のタイトルLiquid Crystals XXII
編集者Iam Choon Khoo
出版者SPIE
ISBN(電子版)9781510620414
DOI
出版物ステータス出版済み - 1 1 2018
イベントLiquid Crystals XXII 2018 - San Diego, 米国
継続期間: 8 19 20188 20 2018

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
10735
ISSN(印刷物)0277-786X
ISSN(電子版)1996-756X

その他

その他Liquid Crystals XXII 2018
米国
San Diego
期間8/19/188/20/18

Fingerprint

Liquid Crystals
Crystal orientation
Liquid Crystal
Liquid crystals
Crystal
liquid crystals
Three-dimensional
Substrates
crystals
Crystals
alignment
Phase modulation
Electrooptical effects
Hysteresis
Substrate
phase modulation
Polarization
electro-optics
Crystalline materials
hysteresis

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

これを引用

Yoshida, H., Takahashi, M., Ohkawa, T., Fukuda, J., Kikuchi, H., & Ozaki, M. (2018). Three-dimensional crystal orientation of blue phase liquid crystals on surfaces. : I. C. Khoo (版), Liquid Crystals XXII [107350I] (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 10735). SPIE. https://doi.org/10.1117/12.2323159

Three-dimensional crystal orientation of blue phase liquid crystals on surfaces. / Yoshida, H.; Takahashi, M.; Ohkawa, T.; Fukuda, Junichi; Kikuchi, Hirotsugu; Ozaki, M.

Liquid Crystals XXII. 版 / Iam Choon Khoo. SPIE, 2018. 107350I (Proceedings of SPIE - The International Society for Optical Engineering; 巻 10735).

研究成果: 著書/レポートタイプへの貢献会議での発言

Yoshida, H, Takahashi, M, Ohkawa, T, Fukuda, J, Kikuchi, H & Ozaki, M 2018, Three-dimensional crystal orientation of blue phase liquid crystals on surfaces. : IC Khoo (版), Liquid Crystals XXII., 107350I, Proceedings of SPIE - The International Society for Optical Engineering, 巻. 10735, SPIE, Liquid Crystals XXII 2018, San Diego, 米国, 8/19/18. https://doi.org/10.1117/12.2323159
Yoshida H, Takahashi M, Ohkawa T, Fukuda J, Kikuchi H, Ozaki M. Three-dimensional crystal orientation of blue phase liquid crystals on surfaces. : Khoo IC, 編集者, Liquid Crystals XXII. SPIE. 2018. 107350I. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2323159
Yoshida, H. ; Takahashi, M. ; Ohkawa, T. ; Fukuda, Junichi ; Kikuchi, Hirotsugu ; Ozaki, M. / Three-dimensional crystal orientation of blue phase liquid crystals on surfaces. Liquid Crystals XXII. 編集者 / Iam Choon Khoo. SPIE, 2018. (Proceedings of SPIE - The International Society for Optical Engineering).
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