2005
DOI: 10.1016/j.carbon.2004.11.040
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Microstructure and microscopic deposition mechanism of twist-shaped carbon nanocoils based on the observation of helical nanoparticles on the growth tips

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Cited by 26 publications
(21 citation statements)
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“…anisotropic facet catalytic activity of ␣-Fe, in accordance with the helical growth model proposed by Motojima's group (Yang et al, 2005;Kawaguchi et al, 1992). Interestingly, when two "arc" HCNTs are symmetrically grown from one catalyst nanoparticle (Fig.…”
Section: Resultssupporting
confidence: 85%
“…anisotropic facet catalytic activity of ␣-Fe, in accordance with the helical growth model proposed by Motojima's group (Yang et al, 2005;Kawaguchi et al, 1992). Interestingly, when two "arc" HCNTs are symmetrically grown from one catalyst nanoparticle (Fig.…”
Section: Resultssupporting
confidence: 85%
“…In other words, the very fine catalyst particles formed by the solution process are required to grow to a certain size to initiate the growth of helical CNFs with a diameter of 100 nm. This agrees well with previous reports of the formation of helical CNFs with diameters of about 100 nm [10][11][12][13][14].…”
Section: Discussionsupporting
confidence: 93%
“…Recently, helical CNFs were synthesized intentionally using metallic catalysts, including Fe-based alloys [10], Zn [11], Cu [7,12,13], Pd [14], and Ni [15]. In the case of Cu catalysts, Ni-Cu alloy catalysts containing more than 25 at.% Cu or surface-enriched with Cu have been reported to produce octopus carbon with poor crystallinity [16][17][18].…”
Section: Introductionmentioning
confidence: 99%
“…In 2002, Motojima and co-workers 4,21 proposed an acceptable growth mechanism for the carbon microcoils based on the crystal faces of the catalyst grain. Similar analogy could be extended to the present case of springlike CNFs.…”
Section: 2mentioning
confidence: 99%