Single-wall carbon nanotube devices prepared by chemical vapor deposition

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Abstract
We have fabricated single-wall carbon nanotubes by chemical vapor deposition from methane using a catalyst consisting of iron oxide with molybdenum supported by alumina particles. The nanotubes are grown both on loose catalyst powders, which allows for transmission electron microscopy studies, and on catalyst islands deposited on a substrate to enable direct growth on the substrate surface and subsequent evaporation of metal electrodes over the nanotubes for transport measurements. In the latter case, the nanotubes are characterized by scanning electron microscopy and atomic force microscopy. They are found to be single-walled and occur both individually and in small bundles.

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