標題: Low-temperature fabrication of carbon nanofibers by self-assembling of polycyclic aromatic hydrocarbon molecules
作者: Suen, SC
Whang, WT
Wu, BW
Lai, YF
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 19-四月-2004
摘要: Carbon nanofibers (CNFs) with diameter similar to66 nm have been synthesized from coronene by low-temperature (similar to45 degreesC) vacuum sublimation without the aid of a catalyst. Our method makes use of the property of polycyclic aromatic hydrocarbon (PAH) molecules, which can self-assemble into columnar aggregates. This polycyclic aromatic hydrocarbon-carbon nanofibers (PAH-CNFs) reveal much better thermal stability than commercial carbon nanotubes and exhibit field-emission characteristics with the onset of an electric field of 5.4 V/mum and field enhancement factor of 1326 cm(-1) for 100 mum interelectrode distance. The relative high thermal stability and easier process open up a possibility to fabricate large-scale field-emission devices in an efficient way and to provide a broad range of applications in nanoscience and technology. (C) 2004 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.1707229
http://hdl.handle.net/11536/26863
ISSN: 0003-6951
DOI: 10.1063/1.1707229
期刊: APPLIED PHYSICS LETTERS
Volume: 84
Issue: 16
起始頁: 3157
結束頁: 3159
顯示於類別:期刊論文


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