Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina

S. Esconjauregui, R. Xie, Y. Guo, S.M.-L. Pfaendler, M. Fouquet, R. Gillen, C. Cepek, C. Castellarin-Cudia, S Eslava, J. Robertson

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Abstract

We report both the growth of carbon nanotube forests and electrical conduction on W, Ti, and TiN substrates coated with an ultra-thin Al O support layer. Varying the AlO thickness, a good electrical contact and high nanotube density is possible for a 0.5 nm AlO layer as such an ultra-thin film allows tunnelling. X-ray photoelectron spectroscopy shows that, when using these non-continuous AlO films, Fe catalyst diffuses into the conducting substrates, eventually causing growth to stop. Forests grown on ultra-thin AlO are potentially useful for applications as interconnects, supercapacitors, and heat spreaders.
LanguageEnglish
JournalApplied Physics Letters
Volume102
Issue number11
DOIs
StatusPublished - 18 Mar 2013

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aluminum oxides
carbon nanotubes
conduction
electrochemical capacitors
electric contacts
nanotubes
photoelectron spectroscopy
catalysts
heat
thin films
x rays

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Esconjauregui, S., Xie, R., Guo, Y., Pfaendler, SM-L., Fouquet, M., Gillen, R., ... Robertson, J. (2013). Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina. DOI: 10.1063/1.4798261

Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina. / Esconjauregui, S.; Xie, R.; Guo, Y.; Pfaendler, S.M.-L.; Fouquet, M.; Gillen, R.; Cepek, C.; Castellarin-Cudia, C.; Eslava, S; Robertson, J.

In: Applied Physics Letters, Vol. 102, No. 11, 18.03.2013.

Research output: Contribution to journalArticle

Esconjauregui, S, Xie, R, Guo, Y, Pfaendler, SM-L, Fouquet, M, Gillen, R, Cepek, C, Castellarin-Cudia, C, Eslava, S & Robertson, J 2013, 'Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina' Applied Physics Letters, vol. 102, no. 11. DOI: 10.1063/1.4798261
Esconjauregui S, Xie R, Guo Y, Pfaendler SM-L, Fouquet M, Gillen R et al. Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina. Applied Physics Letters. 2013 Mar 18;102(11). Available from, DOI: 10.1063/1.4798261
Esconjauregui, S. ; Xie, R. ; Guo, Y. ; Pfaendler, S.M.-L. ; Fouquet, M. ; Gillen, R. ; Cepek, C. ; Castellarin-Cudia, C. ; Eslava, S ; Robertson, J./ Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina. In: Applied Physics Letters. 2013 ; Vol. 102, No. 11.
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