Abstract
Abstract We report on the electrical characteristics of plasma enhanced chemical vapour deposition (PECVD)-grown, multi-walled carbon nanotube (MWCNT) devices made by a new fabrication method, PMMA suspended dispersion. This method makes it possible to suspend nanotubes between metal electrodes and to remove unwanted nanotubes from the substrate. The measurements show that the MWCNTs are metallic and able to maintain a current density ∼2×10 6 A/cm 2 for more than 15 days with a maximum current density of ∼1.8×10 7 A/cm 2 . This high current density and reliability will make PECVD-grown MWCNTs applicable to field emission cathodes.
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