Skip to main content
Article thumbnail
Location of Repository

The relationship between contact resistance and contact force on Au coated carbon nanotube surfaces

By E.M Yunus, J.W. McBride and S.M. Spearing

Abstract

Carbon-Nanotube (CNT) coated surfaces are investigated to determine the electrical contact performance under low force conditions. The surfaces under investigation are multi-walled CNTs formed on a Silicon substrate and coated with an Au film. These planar surfaces are mated with a hemispherical Au plated probe mounted in a nano-indentation apparatus. The maximum contact force used is 1mN. The contact resistance of these surfaces is investigated as a function of the applied force and is also studied under repeated loading cycles. The surfaces are compared with a reference Au-Au contact under the same experimental conditions and the results compared to established contact theory. The results show that the multi-walled CNT surface provides a stable contact resistance, but that the performance could be improved further with the application of single-walled CNT coatings. This initial study shows the potential for the application of CNT surfaces as an interface in low force electrical contact applications

Topics: TK, TA, QC
Publisher: Institute of Electrical and Electronics Engineers
Year: 2007
OAI identifier: oai:eprints.soton.ac.uk:48464
Provided by: e-Prints Soton

Suggested articles

Citations

  1. (1997). An elastic-plastic model for a rough surface with an ion-plated metallic coating,” doi
  2. (1987). An elasticplastic model for the contact of rough surfaces,” doi
  3. (2004). Can we achieve ultra-low resistivity in carbon nanotube-based metal composites?” doi
  4. (2003). Determination of Mechanical Properties of Carbon Nanotubes and Vertically Aligned Carbon Nanotube forests using doi
  5. (2006). Method of characterizing electrical contact properties of carbon nanotube coated surfaces,” doi
  6. (2006). Microswitches with sputtered Au, AuPd,Auon-AuPt, and AuPtCu alloy electric contacts,” doi
  7. (1999). Size-dependent electrical constriction resistance for contacts of arbitrary size: doi
  8. (2005). The effects of surface contamination on resistance degradation of hot-switched low-force MEMS electrical contacts,” Electrical Contacts, doi
  9. (2006). The interrelation between adhesion, contact creep, and roughness on the life of gold contacts in radio-frequency microswitches,” doi
  10. (2006). The Loaded Surface Profile: A new technique for the investigation of contact sirfaces,”

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.