2014 Fiscal Year Final Research Report
Single Molecule Chemical Imaging
| Project/Area Number |
25600022
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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 |
Nanomaterials chemistry
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| Research Institution | Saitama University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
|
| Keywords | ケミカルイメージング / 一分子感度 / プラズモン / 表面増強ラマン / 分子間力 |
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| Outline of Final Research Achievements |
To realize chemical imaging, we investigated fabrication methods of metal nanoparticle (MNP) probes using FDTD simulation method, which predicted huge enhancement in Raman scattering intensity at a nanogap between MNP and metal substrates in 400-800 nm, and was experimentally confirmed. On the gap mode, we found that various transition metals even with large damping can be used for huge Raman enhancement as far as we use silver or gold nanoparticles with a size larger than 50 nm. Highly efficient attenuated total reflection optics to utilize both propagating surface plasmon and a gap mode provided additional enhancement for Raman scattering intensity of adsorbates, which enables us single molecule sensitivity for various molecules.
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| Free Research Field |
表面ナノ分光
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