Understanding basic nature, investigation of new phases and applications to device materials of frustrated liquid crystals

了解受挫液晶的基本性质、新相研究及其在器件材料中的应用

• 批准号: 21245037
• 负责人: KIKUCHI Hirotsugu
• 金额: $ 30.62万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21245037/
• 关键词: 液晶; フラストレーション; ブルー相; 電気光学デバイス; 表示素子

A new approach to simultaneously extend the wavelength range of field-induced Bragg diffraction shift and the temperature range of thermodynamically stable BPs has been studied in this project. A new liquid crystal blue material system was shown using a dendron molecule to extend simultaneously the two blue phase ranges. One is the temperature range of thermodynamically stable blue phases. The other is the reversible maximum shift range of Bragg wavelength on the electric field. The physical mechanism of the dendron-stabilizing effect in blue phases is discussed in terms of elastic property and orientational order of liquid crystal molecules. The lattice structure of the blue phases and polymer-stabilized blue phases were closely investigated using confocal laser scanning optical microscope.

本项目研究了一种新的方法，可以同时扩展场致布拉格衍射位移的波长范围和晶体稳定的BPs的温度范围。提出了一种新的蓝色液晶材料体系，该体系使用树枝状分子同时扩展两个蓝色相范围。一个是结晶稳定蓝相的温度范围。另一个是布拉格波长在电场作用下的可逆最大漂移范围。从液晶分子的弹性性质和取向有序性两个方面讨论了蓝相中树枝稳定效应的物理机制。利用共聚焦激光扫描光学显微镜对蓝相和聚合物稳定蓝相的晶格结构进行了细致的研究。

项目成果

Polymer-Stabilization of a Blue Phase Liquid Crystal Deformed by Electrostriction

电致伸缩变形蓝相液晶的聚合物稳定化

• 发表时间: 2012
• 作者: Hiroki Tone;Shuhei Yabu;Hiroyuki Yoshida;Hirotsugu Kikuchi;and Masanori Ozaki
• 通讯作者: and Masanori Ozaki

Influence of Bifunctional Monomer Structure on Phase Stability and Optical Properties of Polymer-Stabilized Blue Phase

双功能单体结构对聚合物稳定蓝相相稳定性和光学性能的影响

• 发表时间: 2012
• 作者: Yuma Takeuchi;Hiroki Higuchi;Yasushi Okumura;Mitsuhiro Kouda;Ryoichi Akaishi;Takanori Matsuyama;Jun-ichi Matsumoto;and Hirotsugu Kikuchi
• 通讯作者: and Hirotsugu Kikuchi

Structure and Dynamics of Polymer-Stabilized Blue Phases at Low Temperature

聚合物稳定蓝相的低温结构与动力学

• 发表时间: 2012
• 作者: Gihwan Lim;Yasushi Okumura;Hiroki Higuchi;and Hirotsugu Kikuchi
• 通讯作者: and Hirotsugu Kikuchi

Control of Helical Structure in Chiral Lyotropic Liquid Crystal by Electrochemical Reaction

电化学反应控制手性溶致液晶螺旋结构

• 发表时间: 2012
• 作者: Hiroki Higuchi;Takanori Suzuki;and Hirotsugu Kikuchi
• 通讯作者: and Hirotsugu Kikuchi

Chiral Liquid Crystalline Phase of Fluorinated Nematic Liquid Crystal Material Doped with a Fluorinated Binaphthyl Chiral Dopant

掺杂氟化联萘手性掺杂剂的氟化向列液晶材料的手性液晶相

• 发表时间: 2011
• 作者: Kota Kakisaka;Hiroki Higuchi;Yasushi Okumura;and Hirotsugu Kikuchi
• 通讯作者: and Hirotsugu Kikuchi