Analysis and structure control of liquid crystal phases having sub-micrometer periodic structures

2013 Fiscal Year Final Research Report

• Project/Area Number: 23310072
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: ISHIKAWA Ken 東京工業大学, 理工学研究科, 准教授 (10176159)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Keywords: 液晶 / 自発的ナノ構造 / 空間閉じ込め

Research Abstract

Liquid crystals are intermediate states between liquid and crystals. Nematic liquid crystal, one of liquid crystal phases, is an anisotropic fluid composed of rod-like molecules and is widely used in television and computer displays. There are many other liquid crystal phases and some of them have self-organized periodic structures of a few hundred nanometer periodicity. These phases have different opt-electric properties compared with the nematic phase and new types of liquid crystal displays using these phases are expected. In this study, we analyzed the detailed structures and emergence mechanisms of some nano-structured liquid crystalline phases. And we studied the interaction between liquid crystalline molecules and surfaces, which plays an important role on the control of the orientation structure of liquid crystals. Upon them, we made structure control of these phases by means of confinement of them inside micro-spaces.

Research Products

• [Journal Article] Photoinduced Ordering Transition in Microdroplets of Liquid Crystals with Azo-Dendrimer (2013)
  • Author(s): G. Lee. F. Araoka, K. Ishikawa, Y. Momoi, H. Haba, K. Yonetake, H. Takezoe
  • Journal Title: Particle & Particle Systems Characterization Volume: 30 Pages: 8470852
  • Peer Reviewed
• [Journal Article] Smooth transitions between biaxial intermediate smectic phases (2013)
  • Author(s): V. Emelyanenko, K. Ishikawa
  • Journal Title: Soft Matter Volume: 9 Pages: 3497-3508
  • Peer Reviewed
• [Journal Article] Novel Bistable Device Using Anchoring Transition and Command Surface (2013)
  • Author(s): T. Ikeda, S. Aya, F. Araoka, K. Ishikawa, O. Haba, K. Yonetake, Y. Momoi, H. Takezoe
  • Journal Title: Applied Physics Express Volume: 6 Pages: 061701
  • Peer Reviewed
• [Journal Article] Evolution of the discontinuous anchoring transition under an electric field (2013)
  • Author(s): S. Aya, F. Araoka, K. Ishikawa and H. takezoe
  • Journal Title: Phys.Rev. E Volume: 87 Pages: 012507-5
  • Peer Reviewed
• [Journal Article] Degeneracy lifting due to thermal fluctuations around the frustration point between anticlinic antiferroelectric SmC(A)* and synclinic ferroelectric SmC* (2013)
  • Author(s): K. L. Sandhya, A. D. L. Chandani, A. Fukuda, J. K. Vij, A. V. Emelyanenko, and K. Ishikawa
  • Journal Title: Phys. Rev. E Volume: 87 Pages: 012502
  • Peer Reviewed
• [Journal Article] Interplay between polarity and chirality in the electric-field-responsive columnar phase of a dipeptide derivative (2012)
  • Author(s): N. Koizumi, G. Shanker, F. Araoka, K. Ishikawa, C. V. Yelamaggad, H. Takezoe
  • Journal Title: NPG Asia Materials Volume: 4 Pages: e11-1-7
  • DOI: 10.1038/am.2012.20
  • Peer Reviewed
• [Presentation] Electro-optical properties of unconventional subphases between ferroelectric and antiferroelectric LC (2013)
  • Author(s): K. Isobe, K. Ishikawa
  • Organizer: The 20th International Display Workshops
  • Place of Presentation: Sapporo, Japan
  • Year and Date: 2013-12-04
• [Presentation] Azo dendrimer for device applications (2013)
  • Author(s): H. Takezoe, T. Ikeda, G. Lee, S. Aya, O. Haba, K. Yonetake, Y. Momoi, F. Araoka, K. Ishikawa
  • Organizer: 12th European Conference on Liquid Crystals (ECLC 2013)
  • Place of Presentation: Rhodes, Greece
  • Year and Date: 2013-09-24
• [Presentation] Orientational Structure Transition of Ferroelectric Liquid Crystal Material Observed by Two-Photon Fluorescence Microscopy (2013)
  • Author(s): A. Ito, S. Aya, F. Araoka, K. Ishikawa, H. Takezoe
  • Organizer: 14th International Conference on Ferroelectric Liquid Crystals
  • Place of Presentation: Magdeburg, Germany
  • Year and Date: 2013-09-05
• [Presentation] 液晶の配向構造相転移における構造解析及び熱測定 (2012)
  • Author(s): 謝暁晨, 佐々木裕司, 荒岡史人,石川謙, 江間健司,竹添秀男
  • Organizer: 環境・エネルギー材料熱物性シンポジウム2012
  • Place of Presentation: 東京工業大学、東京
  • Year and Date: 2012-11-20
• [Presentation] ネマチック液晶のアンカリング転移を用いた UV光による書き換え可能なメモリーデバイス (2012)
  • Author(s): 池田卓矢,謝暁晨,荒岡史人, 石川謙,竹添秀男
  • Organizer: 日本液晶学会討論会
  • Place of Presentation: 千葉大学、千葉
  • Year and Date: 2012-09-05
• [Presentation] SmC*-SmCA*連続転移におけるらせん特性反射と電場応答 (2012)
  • Author(s): 磯部和宏,竹添秀男,石川謙
  • Organizer: 日本液晶学会討論会
  • Place of Presentation: 千葉大学、千葉
  • Year and Date: 2012-09-05
• [Presentation] Flexoelectric coupling and smooth transitions between intermediate smectic phases. Six-layer subphase. (2012)
  • Author(s): Emelyanenko, A. V., Ishikawa,K.
  • Organizer: 24th International Liquid Crystal Conference
  • Place of Presentation: Mainz, Germany
  • Year and Date: 2012-08-19
• [Presentation] Non-First-Order Transition between SmC* and SmCA* (2012)
  • Author(s): Ishikawa, K., Isobe, K., Takezoe, H., Isobe, M., Sasaki, Y., Ema, K.
  • Organizer: International Liquid 24th Crystal Conference
  • Place of Presentation: Mainz, Germany
  • Year and Date: 2012-08-19