2014 Fiscal Year Final Research Report
Newly Proposal for Chirality Control of Single-Walled Carbon Nanotubes by Resonance Photo-Excitation
| Project/Area Number |
24560383
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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 |
Electronic materials/Electric materials
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| Research Institution | Nihon University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
IWATA Nobuyuki 日本大学, 理工学部, 准教授 (20328686)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 単層カーボンナノチューブ / 化学的気相蒸着 / 自由電子レーザ / カイラル / ラマンスペクトル / サファイヤ基板 / 配向成長 |
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| Outline of Final Research Achievements |
We have developed a new in-situ single walled carbon nanotubes (SWNTs) CVD process where the desired chirality was obtained by irradiation of free electron laser (FEL) of which the wavelength corresponded to the resonance photo-excitation of SWNTs with the desired chirality. The SWNTs grew along to the [-111] direction of sapphire r-planes without FEL irradiation. When 800 nm FEL was irradiated during CVD growth, it was found from Raman spectrum analysis that the obtained SWNTs phases were only semiconducting with the diameter of about 1.1 nm. Furthermore it was confirmed that the independent SWNT was preferentially grown in the characteristic direction normal to the step lines in the sapphire substrates. Our newly developed process will be applicable for preparation of nano-electronic devices.
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| Free Research Field |
電子・電気材料工学
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