Carbon nanotube as the core of conical carbon fiber: fabrication,characterization and field emission property |
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| Authors: | W Zhang ZH Xi GM Zhang S Wang MS Wang JY Wang ZQ Xue |
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| Institution: | (1) Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing, 100871, P.R. China |
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| Abstract: | Conical carbon fibers (CCFs) with carbon nanotubes (CNTs) as their cores were grown on graphite substrates with a chemical vapor deposition method. The CNT-cored CCFs were about several tens of micrometers in length. In the interaction with a probe system, the CNT core filaments demonstrated good mechanical strength. Furthermore, field emission currents around 100 μA were also attained from individual CNTs. The growth mechanism of this CNT/CCF combined structure is briefly discussed. Our method has provided a convenient and inexpensive approach to mass assembling CNTs to a carbon substrate. PACS 81.05.Uw; 81.15.Gh; 79.70.+q |
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