Single wall carbon nanotube based aggregates and their electrical characterizations

chemical–physical approaches. The investigated systems consist in bundles of SWCNs in form of tablets, membranes, ribbons obtained by self-organization of purified SWCNs and covered by Nafion membranes. The I–V measurements indicate, for all the systems, a perfect ohmic behaviour, reproducible electrical properties and high stability. The intrinsic electrical behaviour of the SWCN can be modulated by controlling the arrangement and the overall organization of the nanotube bundles. In particular, improved currents are measured for SWCN bundles aligned by a dielectrophoresis process. The specific electrical properties of aligned bundles, tablets, membranes and ribbons make these nanotube-based systems promising components for the assembling of micro- and nano-scale electronic, energy storage and sensor devices. © 2004 Elsevier B.V. All rights reserved. Keywords