Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina
| Title | Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | Esconjauregui, S, Xie, RS, Guo, YZ, Pfaendler, SML, Fouquet, M, Gillen, R, Cepek, C, Castellarin-Cudia, C, Eslava, S, Robertson, J |
| Journal | Applied Physics Letters |
| Volume | 102 |
| Pagination | 113109 |
| Date Published | mar |
| Abstract | We report both the growth of carbon nanotube forests and electrical conduction on W, Ti, and TiN substrates coated with an ultra-thin Al2O3 support layer. Varying the Al2O3 thickness, a good electrical contact and high nanotube density is possible for a 0.5nm Al2O3 layer as such an ultra-thin film allows tunnelling. X-ray photoelectron spectroscopy shows that, when using these non-continuous Al2O3 films, Fe catalyst diffuses into the conducting substrates, eventually causing growth to stop. Forests grown on ultra-thin Al2O3 are potentially useful for applications as interconnects, supercapacitors, and heat spreaders. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4798261] |
| DOI | 10.1063/1.4798261 |
