Optical Nano-Tomography on Photosensitive Single-Wall Carbon Nanotube Arrays in Zeolite Crystals
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概要
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Single-wall carbon nanotubes of the smallest diameter formed in microchannel arrays of Zeolite single crystals (IUPAC cord: AFI) have attractive potential for fundamental and device-oriented optical researches. Here we report on very photosensitive characteristics of the material at room temperature. We find that tightly focused irradiation of the 488 nm Ar+-ion laser light causes remarkable suppression of the visible emission from nanotubes. The photo-induced suppression occurs under low-level irradiation less than 1 μW. By the nano-tomography performed with Nanofinder, a three-dimensional spectro-tomographic system based on a confocal laser microscope, the size of the affected region is estimated to be $1\,{\micron}\times 1\,{\micron}\times 2\,{\micron}$. This is comparable to the effective volume of the photo-irradiation spot. We discuss the origin of the photo-irradiation effects in view of the effects of the thermal conduction along the tube axis and of the local electronic effects within the photo-irradiated region.
- 2004-02-15
著者
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NAKA Nobuko
Department of Physics, Graduate School of Science, The University of Tokyo
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NAGASAWA Nobukata
Department of Physics and Institute of Nano Science and Technology, Hong Kong University of Science
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Tang Zi-kang
Department Of Physics And Institute Of Nano Science And Technology Hong Kong University Of Science A
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Kudryashov Igor
Tokyo Instrument Inc.
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SUGIYAMA Hirokazu
Department of Physics, Graduate School of Science, The University of Tokyo
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Li Zhao-ming
Department Of Physics And Institute Of Nano Science And Technology Hong Kong University Of Science A
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Naka Nobuko
Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Li Zhao-Ming
Department of Physics and Institute of Nano Science and Technology, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
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Nagasawa Nobukata
Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Tang Zi-Kang
Department of Physics and Institute of Nano Science and Technology, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
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Sugiyama Hirokazu
Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Kudryashov Igor
Tokyo Instruments, Inc., Nishikasai, Edogawa-ku, Tokyo 134-0088, Japan
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