| 研究課題/領域番号 |
15K04637
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| 研究機関 | 静岡大学 |
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研究代表者 |
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| 研究期間 (年度) |
2015-04-01 – 2018-03-31
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| キーワード | photyonic crystals / structural color / direct laser writing / infra-red sensor / laser lithography / photonic crystal sensor |
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| 研究実績の概要 |
1. 3D PhC architectures were examined theoretically and experimentally aiming to obtain PhCs with bright structural color. It was confirmed that sufficient sensing performance can be achieved using 3D woodpile structures
2. Organic-inorganic photoresist SZ2080 was found to be suitable initial material. However, thermal properties of SZ2080, such as value of coefficient of thermal expansion, are not known from the literature and could not be determined experimentally.
3. Prototype PhC samples were fabricated, their optical reflectance spectra were examined, presence of bright structural color was confirmed.
4. Sensitivity of structural color to the presence of IR irradiation, and to environmental factors, such as liquids, vapors, and gases, were examined experimentally.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
Most of the goals planned for FY2016 have been successfully achieved because the research activities were carefully planned, and many checks of various experimental requirements were made in advance.
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| 今後の研究の推進方策 |
During FY2017 work on further improvements and finalization of photonic crystal sensor will be conducted in accordance to the original plan.
1. Photonic crystal micro-sensors with reduced footprint size of 10x10 square μm, and 1D as well as 2D arrays consisting of such structures will be prepared to demonstrate the IR imaging capability. Using these structures, fundamental understanding of IR sensitivity in artificial PhC structures will be studied and improved.
2. Studies of physical mechanism of IR sensitivity in natural and artificial PhC samples will be continued. Structure fabrication and characterization efforts will be repeated .
3. Behavior of PhC structures and modification of structural color upon immersion in various liquids, such as water, ethanol, isopropanol, acetone, and others, will be investigated, focusing on properties of theses structures as diffractive optical elements (DOE). By exploiting temperature-dependent refractive index of the infiltrating liquids, change in the diffraction efficiency of DOE will be investigated. This will allow another realization of IR micro-sensor with all-optical readout. Design, DLW fabrication and characterization of DOE samples will be performed.
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| 次年度使用額が生じた理由 |
The small amount remaining from the previous year has resulted from the difficulty to precisely adjust price of the purchases.
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| 次年度使用額の使用計画 |
This small amount will be added to the future purchases.
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