Carbon Nanofiber or Carbon Nanotube?—The Role of Hydrogen During Rapid Thermal Processing
Carbon nanotube coatings were synthesized by rapid thermal processing of nickel doped amorphous carbon films. During sputter deposition of the films, different ratios of hydrogen/argon gas were used to study the effect of hydrogen on carbon nanotube growth. The results showed only amorphous nanofibers were grown on unhydrogenated films, while the hydrogenated films yield multiwalled carbon nanotubes. Hydrogen is believed to promote catalytic life of the nickel catalyst dots as well as gasifying the inner amorphous core of the nanofibers so as to result in the formation of the nano tubular structures.
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Document Type: Short Communication
Publication date: August 1, 2011
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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