Skip to main content
Article
A Simultaneous Increase in the Thermal and Electrical Transport in Carbon Nanotube Yarns Induced by Inter-Tube Metallic Welding
Carbon
  • Sabyasachi Ganguli, Air Force Research Laboratory
  • Amber N. Reed, Air Force Research Laboratory
  • Chaminda Jayasinghe, General Nano
  • Joe Sprengard, General Nano
  • Ajit K. Roy, Air Force Research Laboratory
  • Andrey A. Voevodin, Air Force Research Laboratory
  • Christopher Muratore, University of Dayton
Document Type
Article
Publication Date
8-1-2013
Abstract
Vertically aligned arrays of multiwall carbon nanotubes (MWCNT) were decorated with gold (Au) nanoparticles of different diameter and areal densities and spun into yarns. The melting point of Au nanoparticles determined by differential scanning calorimetry was approximately 260 °C, well below the oxidation temperature of carbon. A continuous yarn was formed while pulling out a bundle of CNTs from the metalized CNT array. Relatively low temperature (300 °C) thermal processing of the metalized yarn resulted in a 30% improvement in thermal conductivity, 40% increase in electrical conductivity and a 4× increase in elastic modulus. Cross-sections of the yarn were examined with transmission electron microscopy to characterize the physical nature of the metal–nanotube interface. The deposition procedure described to decorate the nanotube yarns is easily scalable to larger CNT arrays or other configurations for commercial applications, such as medical implants, lightweight conductors, smart uniforms for the soldiers, and conformal electronics in aerospace industry.
Inclusive pages
479–486
ISBN/ISSN
0008-6223
Comments

Permission documentation is on file.

Publisher
Elsevier
Peer Reviewed
Yes
Citation Information
Sabyasachi Ganguli, Amber N. Reed, Chaminda Jayasinghe, Joe Sprengard, et al.. "A Simultaneous Increase in the Thermal and Electrical Transport in Carbon Nanotube Yarns Induced by Inter-Tube Metallic Welding" Carbon Vol. 59 (2013)
Available at: http://works.bepress.com/christopher-muratore/35/