| Project/Area Number |
16K13857
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | ナノ粒子 / オプトメカニクス / 環境分析 |
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| Outline of Final Research Achievements |
We built an experimental apparatus that can trap a few nanoparticles in an optical lattice in vacuum and observe their motion precisely. We showed that nanoparticles made of various materials can be trapped at atmospheric pressure and those made of a few materials, apart from silica used in previous studies, can even be stably trapped in vacuum. Furthermore, we showed that the oscillation frequency in vacuum depends on materials and demonstrated the principle of the non-destructive constitution analysis of nanoparticles. As an unexpected result, we discovered that two nanoparticles in a single optical lattice continuously orbit around each other even at atmospheric pressure and found that this phenomenon has properties significantly differing from known oscillation phenomena based on the radiation pressure.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究により、真空中におけるナノ粒子の運動の観測を通じてその材質を非破壊に推定する、という非破壊組成分析の原理が実証できたため、環境中を漂うナノ粒子に対する新たな角度からの分析が可能となると期待される。また、2個のナノ粒子による軌道運動の周波数は粒子の質量に非常に敏感であることから、粒子に気体分子が吸着される過程についての研究を進めることで、将来的には新しいタイプの気体検出センサーとしての応用が期待される。
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