| Abstract
| - Through the use of commercial graphite powders as the carbon sources, a variety of interesting tubular carbonnano- and microstructures, such as networked carbon nanotubes, aligned carbon microtubes with hexagonalcross-sections, aligned tapered carbon tubes, and hollow carbon microhorns, have been successfully synthesized.As-grown tubular carbon structures were characterized using scanning electron microscopy, transmissionelectron microscopy, and X-ray energy-dispersive spectroscopy. An in situ template mechanism was proposedto explain the possible growth process. The vibrational properties of the synthesized tubular carbon structureswere also studied by Raman spectroscopy.
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