Slipperyinterface and molecluar pinion gear

• Project/Area Number: 26610132
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Biological physics/Chemical physics/Soft matter physics
• Research Institution: Kyoto University
• Principal Investigator: Yamamoto Jun 京都大学, 理学(系)研究科(研究院), 教授 (10200809)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 液晶 / アンカリング / バックフロー / 回転と並進運動 / ラックアンドピニオン / 回転並進 / スリッパリー / 潤滑 / 相分離 / ぬれ

Outline of Final Research Achievements

We demonstrated that the drastic reduction of the driving voltage (<1 order ~10V/10micro) by introducing the slippery interface of the liquid walls under interdigitated in-plane electrodes keeping the nature of the ultra-fast switching dynamics. Slippery interfaces are artificially designed and spontaneously realized by the macroscopic phase separation due to the solvent effects on the liquid crystals. Smooth motion of the C-director is originated by the lubrication of the molecular motion on the slippery liquid interfaces. We have identified the clear change of the mechanism of the electro-optic response of SmC* related to helix motion by analyzing the motion of the Cano’s wedge by polarizing microscope. We discussed about the switching dynamics of SmC* on the slippery interfaces both intra and inter helix unwinding/rewinding motions.

Research Products

• [Int'l Joint Research] Luxemburg University(ルクセンブルク)
• [Journal Article] 液晶秩序中のフラストレーションと粘弾性ダイナミクス (2016)
  • Author(s): 山本 潤
  • Journal Title: 液晶 Volume: 20 Pages: 4-18
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electro-optic switching with liquid crystal graphen (2016)
  • Author(s): Min Jae Kim, Ji Hyun Park, Jun. Yamamoto, Youn Sang Kim and Giusy Scalia
  • Journal Title: Physica Status solidi (RRL) Volume: 10 Issue: 5 Pages: 397-403
  • DOI: 10.1002/pssr.201600038
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Effects of layer order on the mobility of mesogenic molecules in SmA liquid-crystalline emulsions (2016)
  • Author(s): Shinji Bono, Yoich Takanishi and Jun Yamamoto
  • Journal Title: Europhysics Letters Volume: 109 Issue: 5 Pages: 56004-56004
  • DOI: 10.1209/0295-5075/113/56004
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Achiral flexible liquid crystal trimers exhibiting chiral conglomerates (2016)
  • Author(s): Haruna Sasaki, Yoichi Takanishi, Jun Yamamoto and Atsusi Yoshizawa
  • Journal Title: Soft Matter Volume: 12 Issue: 14 Pages: 3331-3339
  • DOI: 10.1039/c5sm02969d
  • Peer Reviewed / Open Access
• [Journal Article] A Twist-Bend Nematic (NTB)Phase of Chiral Materials (2015)
  • Author(s): Ewa Gorecka, Natas Vaupotic, Anna Zep, Damian Pociecha, JunYoshioka, JunYamamoto, and Hideo Takezoe
  • Journal Title: Angew. Chem. Volume: 127 Issue: 35 Pages: 10293-10297
  • DOI: 10.1002/ange.201502440
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Chiral conglomerates observed for a binary mixture of a nematic liquid crystal trimer and 6OCB (2015)
  • Author(s): Atsushi Yoshizawa, Yusuke Kato, Haruna Sasaki, Yoichi Takanishi and Jun Yamamoto
  • Journal Title: Soft Matter Volume: 11 Issue: 45 Pages: 8827-8833
  • DOI: 10.1039/c5sm02121a
  • Peer Reviewed / Open Access
• [Journal Article] The effect of the liquid-crystalline order on releasing dye molecules from liquid-crystalline nano-emulsions (2015)
  • Author(s): S. Bono, Masayuki Yokoyama, Y. Takanishi and J. Yamamoto
  • Journal Title: Mol. Cryst. Liq. Cryst. Volume: 610 Issue: 1 Pages: 157-162
  • DOI: 10.1080/15421406.2015.1025625
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Supermolecular Bent Configuration Composed of Achiral Flexible Trimers Exhibiting Chiral Domains with Opposite Handedness (2015)
  • Author(s): Haruna Sasaki, Yoichi Takanishi, Jun Yamamoto, and Atsushi Yoshizawa
  • Journal Title: J. Phys. Chem. B Volume: 119 Issue: 12 Pages: 4531-4538
  • DOI: 10.1021/jp512710r
  • Peer Reviewed / Open Access
• [Journal Article] Hyper Swollen Perfluorinated Smectic Liquid Crystal by Perfluorinated Oils (2015)
  • Author(s): M. Murase, Y. Takanishi, I. Nishiyama, A. Yoshizawa and J. Yamamoto
  • Journal Title: RSC Adv Volume: 5 Issue: 1 Pages: 215-220
  • DOI: 10.1039/c4ra12938e
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] The effect of the liquid-crystalline order on releasing dye molecules from liquid-crystalline nano-emulsions (2015)
  • Author(s): S.Bono, Masayuki Yokoyama, Y. Takanishi and J. Yamamoto
  • Journal Title: Mol. Cryst. Liq. Cryst. Volume: in press
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Isotropic-to-nematic phase transition of liquid crystals confined in nanoemulsion droplets (2015)
  • Author(s): S.Bono, Y. Takanishi and J. Yamamoto
  • Journal Title: Europhysics Letters Volume: 109 Issue: 2 Pages: 26004-26004
  • DOI: 10.1209/0295-5075/109/26004
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Flexible taper-shaped liquid crystal trimer exhibiting a modulated smectic phase (2014)
  • Author(s): S. Kashima, Y. Takanishi, J. Yamamoto, and A. Yoshizawa
  • Journal Title: Liquid Crystal Volume: 41 Issue: 12 Pages: 1752-1761
  • DOI: 10.1080/02678292.2014.950353
  • Peer Reviewed
• [Journal Article] Layer modulated smectic-C phase in liquid crystals with a terminal hydroxyl group (2014)
  • Author(s): Y.Kimoto, A.Nishizawa, Y.Takanishi, A.Yoshizawa and J.Yamamoto
  • Journal Title: Phys. Rev. E Volume: 89 Issue: 4 Pages: 42503-42503
  • DOI: 10.1103/physreve.89.042503
  • Peer Reviewed
• [Presentation] 不純物Disorder効果による液晶界面上の局所融解とSlippery界面 (2016)
  • Author(s): 山下 真澄・高西 陽一・山本 潤
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学 仙台
  • Year and Date: 2016-03-19
• [Presentation] 高分子安定化ブルー相におけるSlippery界面の効果 (2016)
  • Author(s): 加藤 省吾・高西 陽一・山本 潤
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学 仙台
  • Year and Date: 2016-03-19
• [Presentation] 競合するスメクティック液晶混合系における層構造ソフトニング (2016)
  • Author(s): 佐伯 一帆・高西 陽一・西山 伊佐・山本 潤
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学 仙台
  • Year and Date: 2016-03-19
• [Presentation] 強誘電性液晶におけるSlippery界面と光重合効果 (2016)
  • Author(s): 阪辻 和希・高西 陽一・西山 伊佐・山本 潤
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学 仙台
  • Year and Date: 2016-03-19
• [Presentation] 反強誘電性液晶・強誘電性液晶競合系における電気光学応答ダイナミクス (2016)
  • Author(s): 林来美、山本潤、高西陽一
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学 仙台
  • Year and Date: 2016-03-19
• [Presentation] Spontaneous slippery interfaces created by the interface melting effect (2016)
  • Author(s): Masumi Yamashita, Yoichi Takanishi and Jun Yamamoto
  • Organizer: SPIE-Opto 2016
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2016-02-17
  • Int'l Joint Research
• [Presentation] Measurement of the twist distortion elasticity in swollen chiral smectic liquid crystals using dynamic light scattering (2015)
  • Author(s): Kanako Hata, Yoko Ishii, Yoichi Takanishi and Jun Yamamoto
  • Organizer: 16th Optics of Liquid Crystals
  • Place of Presentation: Sopot, Poland
  • Year and Date: 2015-09-18
  • Int'l Joint Research
• [Presentation] The mobility of liquid crystalline molecules in the core of nanoemulsion droplets (2015)
  • Author(s): Shinji Bono, Yoichi Takanishi and Jun Yamamoto
  • Organizer: 16th Optics of Liquid Crystals
  • Place of Presentation: Sopot, Poland
  • Year and Date: 2015-09-15
  • Int'l Joint Research
• [Presentation] Low voltage driving and ultra-fast switching of SmC* (2015)
  • Author(s): Jun Yamamoto and Isa Nishiyama
  • Organizer: 16th Optics of Liquid Crystals
  • Place of Presentation: Sopot, Poland
  • Year and Date: 2015-09-14
  • Int'l Joint Research
• [Presentation] Slippery界面上でのらせん構造とC-directorの2つの運動モード (2015)
  • Author(s): 山本 潤・西山 伊佐
  • Organizer: 2015年 日本液晶学会討論会
  • Place of Presentation: 東京工業大学 すずかけ台キャンパス
  • Year and Date: 2015-09-09
• [Presentation] 不純物Disorder効果による表面局所融解とSlippery界面 (2015)
  • Author(s): 山下真澄・高西陽一・山本潤
  • Organizer: 2015年 日本液晶学会討論会
  • Place of Presentation: 東京工業大学 すずかけ台キャンパス
  • Year and Date: 2015-09-09
• [Presentation] 液晶秩序とフラストレーション (2015)
  • Author(s): 山本 潤
  • Organizer: 2015年 日本液晶学会討論会
  • Place of Presentation: 東京工業大学 すずかけ台キャンパス
  • Year and Date: 2015-09-08
  • Invited
• [Presentation] 膨潤SmC*相のツイスト弾性定数に対する溶媒効果 (2015)
  • Author(s): 畑加奈子・石井陽子・高西陽一・西山伊佐・山本潤
  • Organizer: 2015年 日本液晶学会討論会
  • Place of Presentation: 東京工業大学 すずかけ台キャンパス
  • Year and Date: 2015-09-07
• [Presentation] Slippery Interfaces -Low driving voltage and ultrafast switching for DH-FLC mode- (2015)
  • Author(s): Jun Yamamoto and Isa Nishiyama
  • Organizer: IMID2015
  • Place of Presentation: Daegu, South Korea
  • Year and Date: 2015-08-20
  • Int'l Joint Research / Invited
• [Presentation] Slippery Interfaces -Drastic reduction of driving voltage for ultra-fast switching SmC*- (2015)
  • Author(s): Jun Yamamoto and Isa Nishiyama
  • Organizer: 15th Ferroelectric Liquid Crystals
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2015-06-28
  • Int'l Joint Research
• [Presentation] The nematic order induced by anchoring surface of nanoemulsion droplets (2015)
  • Author(s): Shinji Bono, Yoichi Takanishi and Jun Yamamoto
  • Organizer: 15th Ferroelectric Liquid Crystals
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2015-06-28
  • Int'l Joint Research
• [Presentation] Design and realization of the slippery interfaces for low voltage driving of fast ferroelectric liquid crystal (2015)
  • Author(s): Jun Yamamoto and Isa Nishiyama
  • Organizer: CC3DMRR
  • Place of Presentation: Pusan, South Korea
  • Year and Date: 2015-06-18
  • Int'l Joint Research / Invited
• [Presentation] 振動流動下におけるネマチック液晶の配向パターン (2015)
  • Author(s): 石井陽子、高西陽一、山本潤
  • Organizer: 日本物理学会 第70回年次大会
  • Place of Presentation: 早稲田大学 東京都
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Slippery interfaceにおける強誘電性液晶のダイナミクス (2015)
  • Author(s): 山本潤・西山伊佐
  • Organizer: 日本物理学会 第70回年次大会
  • Place of Presentation: 早稲田大学 東京都
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Dynamic and complex optical patterns from colloids of cholesteric droplets. (2015)
  • Author(s): Junghyun Noh, Irena Drevensek-Olenik, Jun Yamamoto and Jan Lagerwall
  • Organizer: SPIE-Opto 2015
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2015-02-08 – 2015-02-12
  • Invited
• [Presentation] アゾ混合ネマチック液晶におけるUV照射配向容易軸制御と等方－ネマティック相転移 (2014)
  • Author(s): 山下真澄、増谷亮祐、高西陽一、山本潤
  • Organizer: 2014年 日本液晶学会討論会
  • Place of Presentation: くにびきメッセ 島根県
  • Year and Date: 2014-09-06 – 2014-09-08
• [Presentation] Slippy interfaceに接触したSmC*相の低電圧・高速駆動 (2014)
  • Author(s): 山本潤・西山伊佐
  • Organizer: 2014年 日本液晶学会討論会
  • Place of Presentation: くにびきメッセ 島根県
  • Year and Date: 2014-09-06 – 2014-09-08
• [Presentation] Critical Phenomena in the Mixture of Cholesteric and Smectic Blue Phases (2014)
  • Author(s): Jun Yamamoto, Isa Nishiyama
  • Organizer: International Liquid Crystal Conference 2014
  • Place of Presentation: Dublin, Ireland
  • Year and Date: 2014-06-30 – 2014-07-04
• [Presentation] Electro-optic response of the homeotropic SmC* attached on the slippy interfaces - Drastic reduction of threshold for the in-plane electric field - (2014)
  • Author(s): Jun Yamamoto, Isa Nishiyama
  • Organizer: International Liquid Crystal Conference 2014
  • Place of Presentation: Dublin, Ireland
  • Year and Date: 2014-06-30 – 2014-07-04
• [Presentation] Anomaly of the homeotropic alignment in the nematic phase of compounds exhibiting the N-SmC phase sequence (2014)
  • Author(s): T. Fujito, I. Nishiyama, J. Yamamoto, and Y. Takanishi
  • Organizer: Collaborative Conference on Materials Research
  • Place of Presentation: Inchon, South Korea
  • Year and Date: 2014-06-23 – 2014-06-28
  • Invited