摘要
Whether the active catalytic species are in a liquid,solid phase,surface premelting or surface processes during CNT or other nanowire growth are controversial.In order to explore the mechanism for catalytically grown carbon nanotube （CNT）,the mechanism for CNT grown under different temperatures was proposed tentatively.With ethanol chemical vapor deposition （CVD）,carbon n.anotubes （CNTs） were synthesized controllably on Si substrates using cobalt （Co） as a catalyst.The effects of the Co particle size,growth temperature and ethanol pressure on CNT growth were investigated.A different dependence of CNT growth on the Co particle size at different ranges of the growth temperature was found.
Whether the active catalytic species are in a liquid,solid phase,surface premelting or surface processes during CNT or other nanowire growth are controversial.In order to explore the mechanism for catalytically grown carbon nanotube （CNT）,the mechanism for CNT grown under different temperatures was proposed tentatively.With ethanol chemical vapor deposition （CVD）,carbon n.anotubes （CNTs） were synthesized controllably on Si substrates using cobalt （Co） as a catalyst.The effects of the Co particle size,growth temperature and ethanol pressure on CNT growth were investigated.A different dependence of CNT growth on the Co particle size at different ranges of the growth temperature was found.
基金
Funded by the National Hi-Tech Research and Development Porgram of China No.2008AA01Z207
the Natural Science Foundation of Hubei Province,China No.2010CDB01606
the Scientific Research Foundation for the Returned Overseas Scholars
