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Characteristics of the growth of multi-walled carbon nanotubes (CNTs) at a localized surface of a needle-shaped graphite cathode by corona discharge were investigated with varied temperature, 400–1000 °C. For the CNTs' growth, C 2 H 4 in H 2 stream was used as carbon source. The CNTs were observed in aligned form on the tip of a needle-shaped cathode under the present condition...
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