Oriented growth of single-wall carbon nanotubes using alumina patterns

Iuliana Radu*, Yael Hanein, David H. Cobden

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We present a new technique for controlling the orientation of single-wall carbon nanotubes grown by chemical vapour deposition. The technique involves prior patterning of alumina islands on oxidized silicon substrates. Nanotubes growing on the oxide near an alumina boundary are oriented perpendicular to the boundary. Field-effect transistors were successfully fabricated from nanotubes produced using this technique. We argue that the orientation is caused by an electric field due to space charge associated with the alumina.

Original languageEnglish
Pages (from-to)473-476
Number of pages4
Issue number5
StatePublished - May 2004
Externally publishedYes


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