CUED Publications database

Growth of high-density carbon nanotube forests on conductive TiSiN supports

Yang, J and Esconjauregui, S and Robertson, AW and Guo, Y and Hallam, T and Sugime, H and Zhong, G and Duesberg, GS and Robertson, J (2015) Growth of high-density carbon nanotube forests on conductive TiSiN supports. Applied Physics Letters, 106. ISSN 0003-6951

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© 2015 AIP Publishing LLC. We grow vertically aligned carbon nanotube forests on refractory conductive films of TiSiN and achieve area densities of (5.1 ± 0.1) × 10 12 tubes cm -2 and mass densities of about 0.3 g cm -3 . The TiSiN films act as diffusion barriers limiting catalyst diffusion into the bulk of the support, and their low surface energy favours catalyst de-wetting, inducing forests to grow by the root growth mechanism. The nanotube area density is maximised by an additional discontinuous AlO x layer, which inhibits catalyst nanoparticle sintering by lateral surface diffusion. The forests and the TiSiN support show ohmic conduction. These results suggest that TiSiN is the favoured substrate for nanotube forest growth on conductors and liable of finding real applications in microelectronics.

Item Type: Article
Divisions: Div B > Electronic Devices & Materials
Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:43
Last Modified: 17 May 2018 07:04