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1. Engineering the Activity and Lifetime of HeterogeneousCatalysts for Carbon Nanotube Growth via Substrate Ion Beam Bombardment.

Author

Islam, A. E., Nikolaev, P., Amama, P. B., Saber, S., Zakharov, D., Huffman, D., Erford, M., Sargent, G., Semiatin, S. L., Stach, E. A., and Maruyama, B.

Subjects
*CARBON nanotubes, *HETEROGENEOUS catalysis, *SUBSTRATES (Materials science), *ION beams, *CRYSTAL growth, *IRON catalysts, *BOMBARDMENT
Abstract

We demonstrate that argon ion bombardment of single crystal sapphireleads to the creation of substrates that support the growth of verticallyaligned carbon nanotubes from iron catalysts with a density, height,and quality equivalent to those grown on conventional, disorderedalumina supports. We quantify the evolution of the catalyst usinga range of surface characterization techniques and demonstrate theability to engineer and pattern the catalyst support through controlof ion beam bombardment parameters. [ABSTRACT FROM AUTHOR]

Published
2014
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