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Type: Artigo de periódico
Title: Electrical Characterization of Multi-Walled Carbon Nanotubes
Author: Leon, J
Flacker, A
Vaz, AR
Verissimo, C
de Moraes, MB
Moshkalev, SA
Abstract: Electrical characteristics of multi-walled carbon nanotubes (MWNTs) grown by chemical vapor deposition have been investigated as a function of the bias voltage, nanotubes length and temperature, in 2 and 4 terminal configurations. Nanotubes were deposited over metal electrodes using ac dielectrophoresis method. For better contacts between the nanotubes and electrodes, Ni and Pd films were deposited by an electroless deposition technique. Differential conductance was found to rise considerably with bias, and this effect was more pronounced for Ni. Using 2 and 4 terminal configurations, electrical resistance measurements for individual MWNTs were performed, and the results were interpreted using the model of nanotube as a resistive transmission line, where current at low bias flows mainly through the two outermost shells.
Subject: Multi-Walled Carbon Nanotubes
Electrical Properties
Ni and Pd Electroless
Four Terminals Method
Country: EUA
Editor: Amer Scientific Publishers
Citation: Journal Of Nanoscience And Nanotechnology. Amer Scientific Publishers, v. 10, n. 9, n. 6234, n. 6239, 2010.
Rights: fechado
Identifier DOI: 10.1166/jnn.2010.2585
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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