One-shot interferometric dynamic light scattering technique to analyaze space-variant diffusion phenomena
Project/Area Number |
24360157
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Measurement engineering
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Research Institution | Tokyo University of Agriculture and Technology |
Principal Investigator |
IWAI Toshiaki 東京農工大学, 工学(系)研究科(研究院), 教授 (80183193)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
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Keywords | 低コヒーレンス動的光散乱法 / 極端コヒーレンス動的光散乱法 / フーリエ領域低コヒーレンス動的光散乱法 / 拘束ブラウン運動 / 自由ブラウン運動 / wall-drag効果 / 異相界面 / 拡散係数 / 共通光路型干渉動的光散乱法 / スペクトルドメイン低コヒーレンス動的光散乱法 / ワンショット動的光散乱法 / タイムドメイン低コヒーレンス動的光散乱法 / 濃厚粒子計測 / 異相境界物性 / wall-drag法 / 自己組織化析出法 / 動的光散乱法 / タイムドメイン低コヒーレンス動的光散乱法 / スペクトルドメン低コヒーレンス動的光散乱法 / ワンショット動的光散乱法 / wall-drag / 共通経路干渉動的光散乱法 / タイムドメイン動的光散乱法 / スペクトルドメン動的光散乱法 / Wall-drag / 固液界面 / 気液界面 |
Outline of Final Research Achievements |
New types of interferometric dynamic light scattering (DLS) systems were developed to analyze such space-variant diffusion phenomena in the area close to the different phase interface. The white light super-continuum source was introduced to the time-domain interferometric DLS system. The 1.4-um axis resolution enabled to measure directly the diffusion coefficients of Brownian particles at the distance nearer than 5 um from the solid-liquid interface. The Fourier-domain low-coherence DLS system was developed, into which the fast spectroscopic system was built, to realize the one-shot operation. It enabled to measure the diffusion coefficients in the area close to the gas-liquid interface where the boundary condition varies in space and time by evaporation. In addition, the common-path interferometric DLS system was proposed by making both the reference and scattered lights propagate in the same fiber and introducing an optical circulator to gain high robustness improvement.
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Report
(4 results)
Research Products
(42 results)
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[Presentation] 生体医用計測のための光学2015
Author(s)
岩井俊昭
Organizer
第41回冬期講習会(日本光学会)
Place of Presentation
東京大学山上会館
Year and Date
2015-01-22 – 2015-01-23
Related Report
Invited
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