| Project/Area Number |
25600117
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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 |
Optical engineering, Photon science
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| Research Institution | Osaka University |
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Principal Investigator |
LI yanjun 大阪大学, 工学(系)研究科(研究院), 准教授 (50379137)
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| Co-Investigator(Kenkyū-buntansha) |
菅原 康弘 , 教授 (40206404)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 近接場光 / AFM / 原子分解能 / 光学顕微鏡 / 原子スケール |
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| Outline of Final Research Achievements |
The atomic-resolution optical imaging that overcomes the diffraction limit of light is a challenging task. However, atomic-resolution imaging of the optical field has not yet been achieved. We investigate the atomic-resolution imaging of the optical near-field on a surface. In this method, the surface photovoltage of the silicon tip apex induced by the optical near-field on the surface is measured. For the first time, we achieve atomic resolution imaging of the optical near-field on the sapphire α-Al2O3 (0001) surface.
We observe the strong tip-sample distance dependence of the surface photovoltage. This success is a promising development in the exploration of atomic-scale physical and chemical interactions between light and atoms/molecules and offers deeper insight into the various photonic processes and functions on surfaces.
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