CONDUCTIVITY MEASUREMENTS 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.