| Budget Amount *help |
¥42,900,000 (Direct Cost: ¥33,000,000、Indirect Cost: ¥9,900,000)
Fiscal Year 2016: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2015: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
Fiscal Year 2014: ¥23,010,000 (Direct Cost: ¥17,700,000、Indirect Cost: ¥5,310,000)
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| Outline of Final Research Achievements |
We have revealed that strong coupling states between localized surface plasmons and molecule excitons affect the Raman enhancement. Tuning of the localized surface plasmon resonance energy by changing metal nano-dimer structures leads to the modulation of the hybridized polariton energy of the hybridized system between metal nano-dimer structures and organic dye molecules. Maximum Raman enhancement was obtained at an optimized resonant energy between the hybrid states and Raman excitation. The coupling strength can be controlled by not only the structure of metal nano-dimer, but also the electrochemical potential of the system. The density of free electrons in metal nanostructures as well as the redox states of molecules can be varied by the electrochemical potential of the systems, resulting in the changes of the strong coupling states. The present finding can be extended into general scheme of the control for the light-matter interaction.
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