| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
This study was aimed at improving a plastic optical fiber (POF) alkane sensor with a double-layer structure cladding. In the POF sensor, a swelling polymer was deposited through the dip coating method for the lower cladding layer. For the upper cladding, two types of cladding were deposited by electrospray deposition: one with a swollen polymer layer containing dye, and the other with a cloudy light scattering layer without dye. The principle of the POF sensor is to switch its operation from leaky mode to guided mode. Deposition of the dye doped cladding or the scattering layer cladding as the upper layer contributed to the improvement of sensitivity as it is possible to prevent light leaking into the cladding in the leakage mode from returning to the core.
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