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Time-controlled pulse plasma CVD has been developed aiming for the mass production of narrow chirality distributed single-walled carbon nanotubes (SWNTs). Through the comparison of continuous plasma CVD and pulse plasma CVD, it is found that the amount of SWNTs can be increased in keeping with the initial narrow chirality distribution by repeating pulse plasma CVD. The effects of pulse time parameter,...
The suspended graphene nanoribbon (GNR) arrays have been fabricated in large scale by plasma chemical vapor deposition (CVD) with Ni nanobar catalysts. The growth mechanism of GNRs has been also systematically investigated through the comparison with plasma and thermal CVD. The structural deformation rate of Ni can be highly suppressed in plasma CVD compared with that of thermal CVD. Because of the...
The synthesis of graphene nanosheets has been achieved by pulsed arc discharge in water with petroleum asphalt as a carbon source. The synthesized graphene nanosheets were examined by Raman spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, infrared spectroscopy and atomic force microscopy. The results indicate that most of as-synthesized graphene nanosheets have 2–5...
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