| Project/Area Number |
17310073
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | Kyoto University |
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Principal Investigator |
SUZUKI Motofumi Kyoto University, Dept of Eng., Associate Professor (00346040)
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| Co-Investigator(Kenkyū-buntansha) |
KIMURA Kenji Kyoto University, Dept of Eng., Professor (50127073)
NAKAJIMA Kaoru Kyoto University, Dept. of Eng, Assistant Professor (80293885)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥6,930,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥330,000)
Fiscal Year 2007: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2006: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2005: ¥3,300,000 (Direct Cost: ¥3,300,000)
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| Keywords | Nanomaterials / Surface and interfaces / Optical properties / Self-assembly / 動的斜め蒸着 / 金属ナノ粒子 / 局所プラズモン |
|---|
| Research Abstract |
Using a dynamic oblique angle deposition technique, we demonstrate the direct formation of Ag and Au nanorods with quasi-parallel major axes on a template layer of oxide having a strongly anisotropic surface morphology. The optical properties of the nanorods are tuned by varying the deposition conditions without any pre- or posttreatment, and the resulting nanorod arrays exhibit high surface-enhanced Raman scattering (SERS) activity. In addition to high macroscopic uniformity over a large area, our nanorod arrays contain a high density of isolated minerals. Using the optimum Ag nanorod arrays, the SERS imaging of the microdroplets of a rhodamine 6G solution is successfully demonstrated The space resolution of the imaging is of the order of at least a few μm. These features are suitable for the SERS imaging of biomaterials. In addition, we demonstrate the growth of unusual metal whiskers by glancing angle deposition on a high temperature (HT-GLAD) substrate, while the usual columnar structures completely disappear due to accelerated surface diffusion. HT-GLAD is essential fur the nucleation of the whiskers and efficient supply of metal atoms on the side surface of the vertically growing whiskers. HT-GLAD will, for the first time, reveal the mechanisms fm the vapor growth of metal whiskers.
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