Study on the colloidal aggregation caused by electro-hydordynamic effects of nematic liquid crystals

• Project/Area Number: 16K17776
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Biological physics/Chemical physics/Soft matter physics
• Research Institution: Hokkaido University
• Principal Investigator: Sasaki Yuji 北海道大学, 工学研究院, 助教 (00649741)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 液晶 / コロイド / 界面 / 自己組織化

Outline of Final Research Achievements

Ion-doped nematic liquid crystals (NLCs) can exhibit rich electro-hydrodynamic phenomena when an ac electrical voltage is applied. In this work, we use the electro-hydrodynamic effects to to control the colloidal aggregation. By using various NLCs and alignment layers, we have found that colloidal particles form some characteristic structures. Moreover, for a specific experimental condition, we have observed a pattern formation of an NLC which is caused by the ionic contribution.

Research Products

• [Journal Article] Polymer-stabilized liquid crystalline topological defect network for micro-pixelated optical devices (2018)
  • Author(s): Araoka Fumito、Le Khoa、Fujii Shuji、Orihara Hiroshi、Sasaki Yuji
  • Journal Title: Proceedings of SPIE Volume: 10555 Pages: 4-4
  • DOI: 10.1117/12.2299505
• [Journal Article] Polymer-Stabilized Micropixelated Liquid Crystals with Tunable Optical Properties Fabricated by Double Templating (2017)
  • Author(s): Sasaki Yuji、Ueda Motoshi、Le Khoa V.、Amano Reo、Sakane Shin、Fujii Shuji、Araoka Fumito、Orihara Hiroshi
  • Journal Title: Advanced Materials Volume: 29 Issue: 37 Pages: 1703054-1703054
  • DOI: 10.1002/adma.201703054
  • NAID: 120006528257
  • Peer Reviewed
• [Journal Article] Direct observation of coupling between orientation and flow fluctuations in a nematic liquid crystal at equilibrium (2017)
  • Author(s): Orihara Hiroshi、Sakurai Nobutaka、Sasaki Yuji、Nagaya Tomoyuki
  • Journal Title: Physical Review E Volume: 95 Issue: 4
  • DOI: 10.1103/physreve.95.042705
  • NAID: 120006309135
  • Peer Reviewed
• [Journal Article] Reconfigurable topological defect arrays in nematic liquid crystals (2017)
  • Author(s): V. S. R. Jampani Yuji Sasaki, Khoa V. Le, Fumito Araoka,1 and Hiroshi Orihara
  • Journal Title: Proceedings of SPIE Volume: Vol. 10125 Pages: 1012506-1012506
  • DOI: 10.1117/12.2251314
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Large-scale self-organization of reconfigurable topological defect networks in nematic liquid crystals (2016)
  • Author(s): Yuji Sasaki, V.S.R. Jampani, Chiharu Tanaka, Nobutaka Sakurai, Shin Sakane, Khoa V. Le, Fumito Araoka, and Hiroshi Orihara,
  • Journal Title: Nature Communications Volume: 7 Issue: 1 Pages: 13238-13238
  • DOI: 10.1038/ncomms13238
  • NAID: 120005895274
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Polymer-stabilized liquid crystalline topological defect network for micro-pixelated optical devices (2018)
  • Author(s): Araoka Fumito、Le Khoa、Fujii Shuji、Orihara Hiroshi、Sasaki Yuji
  • Organizer: SPIE Photonics West
  • Int'l Joint Research / Invited
• [Presentation] 液晶トポロジカル欠陥配列の高分子安定化 (2017)
  • Author(s): 佐々木裕司、レバンコア、荒岡史人、折原宏
  • Organizer: 日本物理学会春季大会
  • Place of Presentation: 大阪大学、大阪市
  • Year and Date: 2017-03-17
• [Presentation] Reconfigurable topological defect arrays in nematic liquid crystals (2017)
  • Author(s): V. S. R. Jampani, Y. Sasaki, K. V. Le, F. Araoka, H. Orihara
  • Organizer: SPIE Photonics West
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2017-01-28
  • Int'l Joint Research
• [Presentation] 自己組織化で作成した2次元液晶パターンの光学的性質 (2017)
  • Author(s): 天野怜央、佐々木裕司、荒岡史人、藤井修治、折原宏
  • Organizer: 日本液晶学会
• [Presentation] フッ素系配向膜における液晶分子の配向制御 (2017)
  • Author(s): 佐々木裕司、謝暁晨、荒岡史人、折原宏
  • Organizer: 日本液晶学会
• [Presentation] 非晶性フッ素界面における液晶分子の配向制御 (2017)
  • Author(s): 佐々木裕司、謝暁晨、荒岡史人、折原宏
  • Organizer: 日本物理学会
• [Presentation] ネマチック液晶中におけるコロイド二量体の電気泳動 (2016)
  • Author(s): 西岡自晶、髙橋允、佐々木裕司、折原宏
  • Organizer: 日本液晶学会討論会
  • Place of Presentation: 大阪工業大学、大阪市
  • Year and Date: 2016-09-05
• [Presentation] ネマチック液晶におけるトポロジカル欠陥配列の高分子安定化とその物性 (2016)
  • Author(s): 佐々木裕司、坂根伸、天野怜央、上田基史、レバンコア、 荒岡史人、折原宏
  • Organizer: 日本液晶学会討論会
  • Place of Presentation: 大阪工業大学、大阪市
  • Year and Date: 2016-09-05
• [Presentation] 光重合による液晶トポロジカル欠陥配列の局所的安定化 (2016)
  • Author(s): 坂根伸、佐々木裕司、レバンコア、荒岡史人、折原宏
  • Organizer: 日本液晶学会討論会
  • Place of Presentation: 大阪工業大学、大阪市
  • Year and Date: 2016-09-05