| Project/Area Number |
10555114
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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 | 展開研究 |
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| Research Field |
電子デバイス・機器工学
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| Research Institution | AKITA UNIVERSITY |
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Principal Investigator |
SATO Susumu Faculty of Engineering and Resource Science, Akita University, Professor, 工学資源学部, 教授 (50005401)
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| Co-Investigator(Kenkyū-buntansha) |
MASUDA Shin Advantest Research Laboratory, Researcher, 研究員
KAWAMURA Marenori Faculty of Engineering and Resource Science, Akita University, Assistant, 工学資源学部, 助手 (90312694)
SATO Yuichi Faculty of Engineering and Resource Science, Akita University, Lecturer, 工学資源学部, 講師 (70215862)
能勢 敏明 秋田大学, 工学資源学部, 助教授 (00180745)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1999: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | Optical Fiber / Optical Sensing / Reactive Gas / Liquid Crystal / Electric Field Sensor / Multi-Sensing |
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| Research Abstract |
1. Various organic dye films are deposited on the corner-cube prism, and the color reaction spectra, fluorescent spectrum changes and their intensities for small quantity of reaction gases are measure, evaluated and selected for the research studies.
2. Cholesteric liquid crystal cells with selective reflection band at 1.3 μm are prepared using cholesteric liquid crystals containing nematic liquid crystals with adjusted dissolving ratios.
3. The sensor heads with the corner-cube prism of which surfaces are coated by different dye films are constructed, and spectrum changed for acid and/or base gases are analyzed by using multi-variable parameter method. Then the separation and detection of gas species can be attained.
4. On the basis of experimental results, the multi-sensor heads are prepared by sandwiching a couple of cholesteric liquid crystal cells and a nematic liquid crystal cell between the corner-cube prism coated with dye films and the rod lens connected with the optical fiber. Then the multi-sensing system is constructed and its properties are measured and evaluated.
5. The liquid crystal cells are prepared using the substrates coated with several alignment films, which have different anchoring intensities, and the dependence of transmission properties on the electric fields are measured as the change of molecular orientation states. Relations between the anchoring strength and the molecular orientation for the electric field are studied and the evaluations for their properties have been made.
6. The multi-sensor heads above described are connected with the optical fiber, and the sensing system is implemented using an OTDR method, where abnormal phenomena of plural electric apparatuses can be monitored remotely.
7. The results are examined and the research work is summarized.
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