2016 Fiscal Year Final Research Report
Tunneling-probe-enhanced hyper-Raman scattering towards selective excitation of adsorbed molecules at the solid solution interface
| Project/Area Number |
26620056
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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 |
Functional solid state chemistry
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Research Collaborator |
RZEZNICKA Izabela 東北大学, 大学院理学研究科, 准教授 (40565769)
KAJIMOTO Shinji 東北大学, 大学院理学研究科, 助教 (80463769)
DEZAWA Takuma
Mathias WOLF
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 走査型トンネル顕微鏡 / ギャップモード / プラズモン / 銀ナノ粒子 / ハイパーラマン散乱 / ハイパーレイリー散乱 / リチウム内包フラレン |
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| Outline of Final Research Achievements |
The cross section of hyper Raman scattering is 30 orders of magnitude smaller than that of normal Raman scattering and 10 orders of magnitude smaller than that of two-photon fluorescence, which means it is very difficult to observe the hyper Raman process. It was shown that hyper Raman spectra can be measured when molecules are sandwiched between silver nanoparticles inducing the gap-mode plasmon with megahertz high-repetition pulsed laser excitation. In addition, it was found that a thin film prepared from toluene solution of lithium-encapsulated fullerene on a gold substrate showed high electro-conductivity and fullerene cages in the film were negatively charged from tip-enhanced Raman spectra.
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| Free Research Field |
物理化学
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