Control of dense carbon nanotube arrays via hierarchical multilayer catalyst
Fisher, C., Han, Z.J., Levchenko, I., & Ostrikov, K. (2011) Control of dense carbon nanotube arrays via hierarchical multilayer catalyst. Applied Physics Letters, 99(14), pp. 143104-1.
Effective control of dense, high-quality carbon nanotube arrays using hierarchical multilayer catalyst patterns is demonstrated. Scanning/transmission electron microscopy, atomic force microscopy, Raman spectroscopy, and numerical simulations show that by changing the secondary and tertiary layers one can control the properties of the nanotube arrays. The arrays with the highest surface density of vertically aligned nanotubes are produced using a hierarchical stack of iron nanoparticles and alumina and silica layers differing in thickness by one order of magnitude from one another. The results are explained in terms of the catalyst structure effect on carbon diffusivity.
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|Item Type:||Journal Article|
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty|
|Deposited On:||10 Jul 2014 04:33|
|Last Modified:||22 Aug 2014 00:47|
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