Simple thermal chemical vapor deposition synthesis and electrical property of multi-walled carbon nanotubes

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 Fe2O3/SiO2/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 View the MathML source long is about View the MathML source in linear region under bias voltage between 2.5 and View the MathML source. It can undergo a large current of View the MathML source at View the MathML source.