| Budget Amount *help |
¥155,090,000 (Direct Cost: ¥119,300,000、Indirect Cost: ¥35,790,000)
Fiscal Year 2014: ¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
Fiscal Year 2013: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2012: ¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
Fiscal Year 2011: ¥54,340,000 (Direct Cost: ¥41,800,000、Indirect Cost: ¥12,540,000)
Fiscal Year 2010: ¥53,950,000 (Direct Cost: ¥41,500,000、Indirect Cost: ¥12,450,000)
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| Outline of Final Research Achievements |
This research aimed principally at revealing space-time structures of optical fields in metal nanostructures and plasmonic interactions that determine the field structures, through near-field optical imaging and analysis. We found characteristic optical field structures in 1- and 2-dimensional array structures of metal nanoparticles, and the results were intepreted in terms of a simple model of inter-particle interaction. We also obtained some intriguing results on ultrafast dynamics and other basic nano-optical characteristics of metal nanostructures. We further extend the research to studies on optical activity in nanospace. A novel near-field circular dichroism microscope was constructed, and local optical activity of metal nanostructures was visualized. We found that metal nanoparticles yield locally very strong optical activity, and that even highly symmetric achiral nanostructures gave local optical activity.
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