Abstract
Discrete Co catalytic nanoparticles with small diameters are obtained by pulsed vacuum arc evaporation on Si/SiO2 substrates, which are used for the growth of isolated single-walled carbon nanotubes (SWNTs) by an ethanol chemical vapor deposition approach (CVD). The distributions of catalytic nanoparticles change with the number of arc pulses, which allows control of the nanotubes formation. We find that an increase of ethanol pressure during CVD growth can change SWNTs from isolated ones into bundles. A new growth mechanism which combines a tip and base model for SWNT growth has been tentatively proposed. It is suggested that the small size catalytic particles prepared by pulsed arc evaporation have a potential advantage for small diameter SWNT growth.
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78.67.Ch; 78.67.Bf; 78.67.-n; 81.07.De; 61.46.-w
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Zhao, Y., Nakano, H., Murakami, H. et al. Controllable growth and characterization of isolated single-walled carbon nanotubes catalyzed by Co particles. Appl. Phys. A 85, 103–107 (2006). https://doi.org/10.1007/s00339-006-3678-x
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DOI: https://doi.org/10.1007/s00339-006-3678-x