2001
DOI: 10.1023/a:1004879924948
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Cited by 8 publications
(4 citation statements)
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“…It was observed that, in the apparent microstructure of the carbon microcoils, the development of the graphite layers and their regular orientations suggest that the growth mechanism could be obtained by high-temperature treatment and partial oxidation. [16,17] Generally, by the partial oxidation of the heat-treated carbon coils, the amorphous part, grain boundary, or highly stressed parts of the heat-treated carbon coils are more easily oxidized than the bulk graphite layers, and thus an apparent development and a regular orientation of the graphite layers can be clearly observed. Accordingly, the as-grown carbon nanocoils obtained with Au and Ni/Au catalysts were heat treated at 2500 C, in a N 2 atmosphere for 8 h. The heat-treated carbon nanocoils were then partly oxidized at 600 C in air, for 15 min.…”
Section: Heat and Oxidation Treatmentsmentioning
confidence: 99%
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“…It was observed that, in the apparent microstructure of the carbon microcoils, the development of the graphite layers and their regular orientations suggest that the growth mechanism could be obtained by high-temperature treatment and partial oxidation. [16,17] Generally, by the partial oxidation of the heat-treated carbon coils, the amorphous part, grain boundary, or highly stressed parts of the heat-treated carbon coils are more easily oxidized than the bulk graphite layers, and thus an apparent development and a regular orientation of the graphite layers can be clearly observed. Accordingly, the as-grown carbon nanocoils obtained with Au and Ni/Au catalysts were heat treated at 2500 C, in a N 2 atmosphere for 8 h. The heat-treated carbon nanocoils were then partly oxidized at 600 C in air, for 15 min.…”
Section: Heat and Oxidation Treatmentsmentioning
confidence: 99%
“…A piece of the heat-treated carbon nanocoil always has ruptured tips of both the pyramidal and cavity forms, as in the case of the carbon microcoils. [16,17] Many stripes, which incline regularly at about 50 degrees to the fiber axis, can be seen on the surface. Each of these stripes is a piece of a graphite layer.…”
Section: Heat and Oxidation Treatmentsmentioning
confidence: 99%
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“…Their uniqueness and interesting properties have prompted many researchers to investigate carbon coils [1][2][3][4]. Not unlike other carbon micro-and nano-structures, carbon coils have many potential applications such as micro-springs, micro-sensors, magnetic beam generators, and electromagnetic shielding materials [5].…”
Section: Introductionmentioning
confidence: 99%