Abstract
In this letter, a simple thermal chemical vapor deposition growth technique of multi-walled carbon nanotubes (MWCNTs) are present. Aligned carbon nanotube arrays were grown on the Fe 2O 3/SiO 2/Si substrates by pyrolysis of ethanol as carbon source at lower reaction temperature at atmospheric pressure by using a simple apparatus. The as-synthesized MWCNTs were characterized by both scanning electron microscopy and high-resolution transmission electron microscopy. The electrical property of an individual MWCNT was evaluated by I– V measurement. The electrical resistance of single MWCNT of 0.6 μm long is about 330 kΩ in linear region under bias voltage between 2.5 and 4.5 V . It can undergo a large current of 7 μA at 4.5 V .
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