2011 Fiscal Year Final Research Report
Novel properties of liquid crystal gels with helical alignment
| Project/Area Number |
21350123
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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 |
Polymer/Textile materials
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| Research Institution | Kyoto University |
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Principal Investigator |
URAYAMA Kenji 京都大学, 工学研究科, 准教授 (20263147)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 液晶 / エラストマー / ゲル / キラリティ |
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| Research Abstract |
Twist nematic elastomers having a 90 degree twist alignment with definite handedness are prepared by chiral imprint method. The twist nematic elastomers exhibit a macroscopic helical form, and the reversal of the handedness is driven by temperature change. In addition, the shape transition between helicoids and spiral ribbons is induced by changing the width/thickness ratio. Cholesteric elastomers are prepared using reactive chiral LC monomers. The cholestric elastomers reflect the left-circularly polarized light with a characteristic wavelength, and the corresponding wavelength is variable by imposed strain.
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