2015 Fiscal Year Final Research Report
Deuterium NMR investigations of field-induced director alignment in nematic liquid crystals
| Project/Area Number |
24360127
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Osaka Sangyo University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
Usami Kiyoaki 大阪産業大学, デザイン工学部, 准教授 (40360507)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Keywords | 液晶 / 液晶ダイレクタ / 重水素化核磁気共鳴分光法 / 弾性理論 |
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| Outline of Final Research Achievements |
The basic features of the important hydrodynamic processes for low molar mass nematics have been characterized for the systems in their equilibrium and non-equilibrium states. These have been created using electric and magnetic fields to align the director and deuterium nuclear magnetic resonance spectroscopy (DNMR) has been used to explore this alignment. Theoretical models based on continuum theory have been developed to complement the experiments and found to describe successfully the static and the dynamic phenomena observed. Such macroscopic behaviour has been investigated with DNMR spectroscopy, in which an electric field in addition to the magnetic field of the spectrometer is used to rotate the director and produce a non-equilibrium state. This powerful technique has proved to be especially valuable for the investigation of nematic liquid crystals. Time-resolved DNMR spectroscopy can be employed to investigate the dynamic director alignment process.
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| Free Research Field |
液晶物性
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