Pure metal deposit using multi-walled carbon nanotubes decorated with ruthenium dioxide super-nanoparticles

Abstract

For reducing the energy consumption of carbon nanotubes (CNTs) being used as emitters in various applications such as field emission display, electron-beam-induced deposition (EBID), new nano-sized metallic super-particles, ruthenium dioxide, are decorated to the surface of CNTs. The field emission characteristics are investigated and found that the onset voltage can be reduced much - about 23% lower than that of the same CNT emitters in the investigated ones. To obtain conductive nanostructures, electron-beam-induced deposition with individual multi-walled carbon nanotubes (MWNTs) emitters decorated with ruthenium dioxide is realized by introducing tungsten hexacarbonyl (W(CO)/sub 6/) as precursor. The mass of tungsten in deposits is rich up to 98% determined with energy X-ray dispersive spectrometer (EDS), nearly pure-metal deposits are obtained.