| 摘要 |
The invention concerns a method for growing nanotubes or nanofibers on a substrate comprising at least a top layer of a first material, characterized in that it comprises: forming at the surface of the top layer, a barrier film consisting of an alloy of a first material and of a second material, said alloy being stable at a first temperature; forming catalyst blocks made of the second material, at the surface of the alloy film; growing nanotubes or nanofibers at a second temperature lower than said first temperature. The alloy film enables efficient growth of the nanotubes/nanofibers from the catalyst blocks at the surface of said alloy film. In effect, the alloy film constitutes a diffusion barrier with respect to the catalyst on the growth substrate, stable at the catalytic growth temperature of the nanotubes /nanofibers. The invention is applicable in nanotechnology, to field emission devices.
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