Conductivity measurement of catalytically synthesized carbon nanotubes

摘要

Electrical transport measurements have been undertaken on individual multiwalled catalytically synthesized carbon nanotubes. Two different techniques have been employed. In the first one nanotubes have been deposited on top of goldelectrodes. In the second one, atomic force microscope nanolithography has been used to locally oxidize a Ti thin film structure deposited above a single nanotube, thereby defining a two probe electrode configuration. It is shown that the latter method results in a two orders of magnitude lower resistance than the former method, due to the reduced contact resistance.