Abstract
The relationship between base layers beneath a Ni catalyst and carbon nanofiber (CNF) growth was investigated at a deposition temperature of about 480 °C using a direct-current plasma-enhanced chemical vapor deposition system. Amorphous carbon was deposited on some base layers such as Pt, Ni, Cr, and W, while CNFs were grown on other base layers such as Ag, Mo, Cu, Al, and Ti. In order to explain why CNF growth on some base layers such as Pt, Ni, Cr, and W is absent, a new model unlike existing ones, related to the charge transfer rates of materials, was proposed on the basis of results of scanning electron microscopy, atomic force microscopy, energy-dispersive X-ray spectroscopy, and phase diagram analysis.
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