G.8
Log Number: 42
Abstract Submitted to the NT-99-Logo NANOTUBE-99 Workshop:

Conductivity measurements of catalytically synthesized carbon nanotubes

M. Ahlskog1, R.J.M. Vuller1, C. Van Haesendonck1, A. Fonseca2, J. B.Nagy2

1 Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Leuven, Belgium
2 Facultes Univeristaires Notre-Dame de la Paix, Namur, Belgium

Contact e-mail: markus@boojum.hut.fi

We have attached electrical contacts with two different methods to individual catalytically synthesized multiwalled carbon nanotubes and measured their two-terminal electrical resistance at low temperatures. In a first experiment nanotubes were deposited on top of predefined gold electrodes on an oxidized silicon substrate with the common solvent deposition procedure. In a second experiment nanotubes deposited on an oxidized silicon substrate have been covered with a very thin (of the order of 10 nm) Ti film. Next, field induced local oxidation with an atomic force microscope allowed to define two metallic Ti electrodes which are connected to both ends of a nanotube and are isolated from each other by a region of insulating Ti oxide. The second method resulted in a measured resistance which is two orders of magnitude lower than for the first method.

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Last modification:   2020.07.24 (Friday) 20:31:13 EDT