TY - JOUR
T1 - Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina
AU - Esconjauregui, S.
AU - Xie, R.
AU - Guo, Y.
AU - Pfaendler, S.M.-L.
AU - Fouquet, M.
AU - Gillen, R.
AU - Cepek, C.
AU - Castellarin-Cudia, C.
AU - Eslava, S
AU - Robertson, J.
PY - 2013/3/18
Y1 - 2013/3/18
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84875691316&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1063/1.4798261
U2 - 10.1063/1.4798261
DO - 10.1063/1.4798261
M3 - Article
AN - SCOPUS:84875691316
SN - 0003-6951
VL - 102
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 11
ER -