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dc.contributor.authorMisak, Heath Edward
dc.contributor.authorMall, Shankar
dc.identifier.citationMisak, Heath Edward; Mall, S. 2015. Electrical conductivity, strength and microstructure of carbon nanotube multi-yarns. Materials & Design, vol. 75, 15 June 2015:pp 76–84en_US
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractSince the inception of carbon nanotubes (CNTs), there has been a great deal of effort in developing CNT applications. One possible application is to utilize CNT yarn(s) in structural and electrical devices. This study investigated 13 different variations of CNT multi-yarns. The multi-yarns were evaluated and compared in terms of tensile load behavior and electrical conductivity as well as interrelationship and interdependence of these two properties with physical parameters and micro-structural features. The electrical conductivity of the CNT multi-yarn is not affected by the apparent diameter, number of yarns, tex or density, but instead by its interior compactness and acid treatment. The construction of single CNT yarn or multi-yarn can be tailored to achieve stress-strain behavior ranging from a stiff to ductile or highly non-linear behavior. CNT single-yarn is stronger and stiffer than a multi-yarn. The decrease in strength and stiffness of a multi-yarn does not depend directly upon the number of yarns. Thus, larger diameter CNT multi-yarn can be developed with less or no reduction in tensile properties in comparison to that of CNT array. Finally, this study's observations provide useful information for further improvement of the tensile and electrical conductivity performance of CNT yarn(s).en_US
dc.description.sponsorshipThis study was partially supported by the U.S. Air Force Office of Scientific Research (Dr. J. Harrison, AFOSR).en_US
dc.publisherElsevier Ltd.en_US
dc.relation.ispartofseriesMaterials & Design;v.75
dc.subjectCarbon nanotubeen_US
dc.subjectElectrical conductivityen_US
dc.titleElectrical conductivity, strength and microstructure of carbon nanotube multi-yarnsen_US
dc.rights.holderCopyright © 2015 Elsevier B.V. or its licensors or contributors. ScienceDirect® is a registered trademark of Elsevier B.V.

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