2009 Fiscal Year Final Research Report
Realization of ferroelectric columnar liquid crystal phases
| Project/Area Number |
19350090
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials/Devices
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| Research Institution | Chiba University |
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Principal Investigator |
KISHIKAWA Keiki Chiba University, 大学院・工学研究科, 教授 (40241939)
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| Co-Investigator(Renkei-kenkyūsha) |
KOHMOTO Shigeo 千葉大学, 大学院・工学研究科, 究科 (90195686)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 液晶 / 強誘電性 / 記録素子 / 解析・評価 / マイクロ・ナノデバイス |
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| Research Abstract |
Realization of ferroelectric columnar liquid crystal phases were attempted by modification of the molecular structures of liquid crystalline urea compounds. The polar structure of the column was clarified by the effect of alkyl chain length of the urea compounds. Lowering of the liquid crystal temperature range and improvement of the response time on applying a triangular wave voltage were observed in the liquid crystal phases. Further, it was found that the oxygen atoms in the arms of the urea molecules are necessary for the polar switching.
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[Journal Article] Electro-optic Kerr effect in the isotropic phase above the columnar phase of a urea derivative2007
Author(s)
Yoshinori Okada, Fumito Araoka, Yoichi Takanishi, Ken Ishikawa, Shoichiro Nakahara, Keiki Kishikawa, Hyunhee Choi, Jeong Weon Wu, Hideo Takezoe
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Journal Title
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics 75(5-1)
Pages: 050701/1-050701/4
Peer Reviewed
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[Journal Article] Three relaxation processes from an electric-field-induced polar structure in a columnar liquid crystalline urea derivative2007
Author(s)
Yoshinori Okada, Shohei Matsumoto, Fumito Araoka, Masanao Goto, Yoichi Takanishi, Ken Ishikawa, Shoichiro Nakahara, Keiki Kishikawa, Hideo Takezoe, Physical Review E
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Journal Title
Statistical, Nonlinear, and Soft Matter Physics 76(4-1)
Pages: 041701/1-041701/6
Peer Reviewed
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