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Gilbert D. Nessim, Donatello Acquaviva, Matteo Seita, Kevin P. O'Brien and Carl V. Thompson The Critical Role of the Underlayer Material and Thickness in Growing Vertically Aligned Carbon Nanotubes and Nanofibers on Metallic Substrates by Chemical Vapor Deposition Advanced Functional Materials 20

Version of Record online: 31 MAR 2010 | DOI: 10.1002/adfm.200902265

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During thermal CVD of carbon nanofiber and nanotube growth on metal underlayers, the catalyst thin film dewets and diffuses to decorate the underlayer grain boundaries, leading to non-aligned carpets when grain sizes are large. By reducing the underlayer thickness and/or by selecting a material resistant to grain growth, vertically aligned nanofiber/nanotube growth is possible.

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