2004 Fiscal Year Final Research Report Summary
Polarization-selective photosensitization and formation of surface relief gratings in photoreactive polymer liquid crystal films
| Project/Area Number |
15550187
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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/Textile materials
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| Research Institution | University of Hyogo (2004)
Himeji Institute of Technology (2003) |
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Principal Investigator |
KAWATSUKI Nobuhiro University of Hyogo, Graduate School of Engineering, 工学研究科, 助教授 (60271201)
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| Project Period (FY) |
2003 – 2004
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| Keywords | Polymer liquid crystal / Photoinduced reorientation / Polarization selective photosensitization / Polarization grating / Birefringent film |
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| Research Abstract |
Thermally enhanced photoinduced reorientation of photocrosslinkable polymer liquid crystal(PLC) film doped with small amount of triplet photosensitizers by irradiating with a linearly polarized ultraviolet(LPUV) light and subsequent annealing is described. The axis-selectively photocrosslinked mesogenic groupsact as "photocrosslinked anchor", which was photoreacted by the polarization-preserved photosensitization reaction, reorient mesogenic groups parallel to the polarization of LPUV light. Adjusting the exposure angle and degree of the photoreaction realized a three-dimensional molecular orientation. Using a periodic exposure technique pure polarization hologram was successfully developed and surface relief formation can be achieved by the intensity irradiating.
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Research Products
(6 results)
