2010 Fiscal Year Final Research Report
Study on the optical response in THz region for single walled carbon nanotubes, and their application to the generation and detection of THz light
| Project/Area Number |
20540321
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Konan University |
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Principal Investigator |
ICHIDA Masao Konan University, 理工学部, 准教授 (30260590)
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| Co-Investigator(Kenkyū-buntansha) |
AOKI Tamao 甲南大学, 理工学部, 准教授 (80283034)
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| Co-Investigator(Renkei-kenkyūsha) |
SAITO Shingo 情報通信研究機構, 未来CT研究所, 主任研究員 (80272532)
KATAURA Hiromichi 産業技術総合研究所, ナノテクノロジー研究部門, 研究グループ長
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| Project Period (FY) |
2008 – 2010
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| Keywords | カーボンナノチューブ / THz光 |
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| Research Abstract |
Absorption spectra of high purity metallic and semiconducting single-walled carbon nanotubes have been measured in the wide energy region from 1 meV to 5 eV. In the high purity metallic nanotubes sample, strong and broad absorption band have been observed at 0.06 eV. This observation suggests that the optical properties of even high purity metallic nanotube bundles cannot be explained by the simple Drude conduction model. We discuss the origin of these absorption bands for metallic and semiconducting samples with connecting to the existence of a small energy gap in metallic nanotube bundles and plasmon resonance.
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