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Type: Artigo de periódico
Title: Controlled Deposition and Electrical Characterization of Multi-Wall Carbon Nanotubes
Author: Moshkalev, SA
Leon, J
Verissimo, C
Vaz, AR
Flacker, A
de Moraes, MB
Swart, JW
Abstract: A method of ac dielectrophoresis was applied to align and deposit metallic multi-wall carbon nanotubes between pre-fabricated metal (Au, Pd) electrodes with a micron scale separation. For improvement of nanotube contacts with electrodes, Ni and Pd electroless processes were developed, and significant reduction of 2 terminals resistances was demonstrated. Further, using electron and ion beam deposited Pt contacts in two different configurations ("Pt-on-CNT" and "CNT-on-Pt"), 4 terminals measurements have been performed to evaluate intrinsic nanotube resistances. The values between 90 and 130 k Omega/mu m were obtained, while systematically lower values (30-70 k Omega/mu m) were estimated using 2 terminals method. The 4 terminals method was applied to study the effect of ion irradiation on the electrical parameters of supported nanotubes.
Subject: Multi-wall Carbon Nanotubes
Focused Ion Beam
Country: Suíça
Editor: Trans Tech Publications Ltd
Citation: Journal Of Nano Research. Trans Tech Publications Ltd, v. 3, n. 25, n. 32, 2008.
Rights: fechado
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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