2012 Fiscal Year Final Research Report
Fabrication of photoresponsive liquid-crystalline polymer hologram
| Project/Area Number |
22550109
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer chemistry
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 機能性高分子 |
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| Research Abstract |
Photoresponsive liquid-crystalline polymer holograms were fabricated and their photoresponsive behaviors were investigated in terms of photoisomerization, photoinduced change in birefringence and photogenerated stress in cross-linked LC polymer films with low azobenzene concentration, in order to quantitatively understand the relationship between their optical and photomechanical properties. The photogenerated stress depended strongly on the initial Young’s modulus of the films, which was affected by the crosslinking density, and also by photoinduced change in birefringence. In addition, significant photoinduced decrease in Young’s modulus (photosoftening) of the films was observed.
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