The critical role of the underlayer material and thickness in growing vertically aligned carbon nanotubes and nanofibers on metallic substrates by chemical vapor deposition

Gilbert D. Nessim, Donatello Acquaviva, Matteo Seita, Kevin P. O'Brien, Carl V. Thompson

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Vertically aligned carbon nanotubes and nanofibers are grown on metallic Ta and Pd underlayers at temperatures below 500°C. Controlling the size of the grains of the underlayer film is critical because this leads to a more uniform distribution of catalyst dots, which in turn results in vertical alignment of the carbon nanostructures. Rapid and limited heating and appropriate materials selection can also be used to limit catalyst/underlayer reactions that hinder or suppress carbon nanostructure growth or that lead to entangled growth. Control of catalyst reactivity with metallic underlayers is significant because growth on conductive substrates is notoriously difficult, but needed for many applications such as the use of carbon nanostructures in microelectronic circuits.

Original languageEnglish
Pages (from-to)1306-1312
Number of pages7
JournalAdvanced Functional Materials
Volume20
Issue number8
DOIs
StatePublished - 23 Apr 2010
Externally publishedYes

Fingerprint

Dive into the research topics of 'The critical role of the underlayer material and thickness in growing vertically aligned carbon nanotubes and nanofibers on metallic substrates by chemical vapor deposition'. Together they form a unique fingerprint.

Cite this