Elucidation of strong local optical activity and its application for chiral materials
| Project/Area Number |
26410027
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Institute for Molecular Science |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | キラリティ / 円二色性 / 近接場光 / ナノ構造体 / 光学活性 / 金属ナノ構造体 |
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| Outline of Final Research Achievements |
Optical activity of nanostructured materials distinct from that observed in the molecular scale attracts a lot of interest. The unique optical activity originates from chiral electromagnetic interaction at nanometer spatial scales. To investigate and design optical activity, information on spatial features of optical activity must be useful. For this purpose, we developed near-field and far-field CD imaging systems. Near-field CD imaging of plasmonic nanostructures with chiral shapes revealed that both positive and negative CD signals were localized in the single chiral nanostructures. The local CD signals were two-orders of magnitude larger than macroscopically observed CD signal of the same sample. In the far-field CD imaging system, we developed a method that achieves detection of CD signals free from commingling linear dichroism signals in principle, and realized high-sensitivity CD imaging under nearly diffraction-limited spatial resolution.
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Report
(4 results)
Research Products
(49 results)
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[Presentation] Near-field nonlinear CD imaging of gold nanorods2015
Author(s)
Y. Nishiyama, T. Narushima, H. Okamoto
Organizer
15th International Conference on Chiroptical Spectroscopy (CD2015)
Place of Presentation
Conference Hall, Hokkaido University, Sapporo, Hokkaido, Japan
Year and Date
2015-08-30
Related Report
Int'l Joint Research
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[Presentation] Fabrication and evaluation of plasmonic nanopore towards single molecule DNA sequencing2014
Author(s)
M. Tsukahara, S. Itoh, H. Yamazaki, K. Esashika, T. Narsushima, H. Okamoto, T. Saiki
Organizer
The international conference on Near-filed optics, Nanophotonics and related techniques (NFO13)
Place of Presentation
Snow bird mountain resort, Salt lake city, Utah, USA
Year and Date
2014-08-31 – 2014-09-04
Related Report
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