Morphology and Size of Ion Induced Carbon Nanofibers: Effect of Ion Incidence Angle, Sputtering Rate, and Temperature
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概要
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Graphite surfaces were bombarded with oblique Ar+ ions at 1 keV to induce the carbon nanofiber (CNF) growth at room temperature and at high temperature (300 °C), and their dependence of length, diameter and number density on ion-incidence angle and sputtering rate was investigated in detail. The sputtered surface ion-irradiated at normal incidence produced huge cones and rod-like structures. It was found that some of the cones possessed the non-aligned thick carbon fibers on the top. By contrast, obliquely ion-irradiation induced the formation of densely distributed CNF-tipped cones. The higher ion-incidence angle produced CNF of smaller diameter and high fabrication temperature favors the formation of longer fiber with higher numerical density. In addition, the number density of the CNF-tipped cones strongly depended upon the ion-incidence angle rather than the sputtering rate. Thus, the diameter, length and number density of CNFs were strongly dependent upon the ion-irradiation parameters. It is believed that myriad of applications is possible with ion-induced CNFs by selecting the suitable ion-irradiation parameters.
- 2011-01-25
著者
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Yusop Mohd
Department Of Frontier Materials Nagoya Institute Of Technology
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Ghosh Pradip
Department Of Frontier Materials Nagoya Institute Of Technology
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Suzuki Takahito
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Tanemura Masaki
Department Of Environmental Technology Graduate School Of Engineering Nagoya Institute Of Technology
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Yamaguchi Kohei
Department Of Civil And Structural Engineering Faculty Of Engineering Kyushu University
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Hayashi Yasuhiko
Department Of Cardiology Cardiovascular Center Tsuchiya General Hospital
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Hayashi Akari
Department of Environmental Technology, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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Ghosh Pradip
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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Yamaguchi Kohei
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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Yusop Mohd
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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Tanemura Masaki
Department of Environmental Technology & Urban Planning, Nagoya Institute of Technology, Gokisho-cho, Showa-ku, Nagoya 466-8555, Japan
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