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 |