Ultrahigh-sensitive single molecular spectroscopy of lightharvesting complexes by using optical microresonators
| Project/Area Number |
21840003
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics I
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| Research Institution | Hokkaido University |
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Principal Investigator |
FUJIWARA Masazumi Hokkaido University, 電子科学研究所, 助教 (30540190)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥2,639,000 (Direct Cost: ¥2,030,000、Indirect Cost: ¥609,000)
Fiscal Year 2010: ¥1,222,000 (Direct Cost: ¥940,000、Indirect Cost: ¥282,000)
Fiscal Year 2009: ¥1,417,000 (Direct Cost: ¥1,090,000、Indirect Cost: ¥327,000)
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| Keywords | 非線形光学 / 光物性 / ナノフォトニクス / 単一分子分光 / 超高感度 / フォトニクス / 光ナノファイバ / 微小球共振器 / 光合成蛋白 / コヒーレント分光 / 量子光学 |
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| Research Abstract |
We have developed ultrahigh-sensitive single molecular spectroscopy by using nano-photonic devices including optical microresonators and nanofibers and have applied this method to single photosynthetic light-harvesting pigment-protein complexes. We have demonstrated (1) the single molecular observation of the light-harvesting complexes at room temperature with a conventional objective and (2) high-sensitive fluorescence detection of quantum dots using nanofiber (6.6% of the total emission photons was detected). These facts suggest that it is possible to detect fluorescence of single light-harvesting complexes with 4-times greater fluorescence collection efficiency.
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Report
(3 results)
Research Products
(21 results)
