Location of Repository

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

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


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

Topics: TK, TA
Year: 2009
OAI identifier: oai:eprints.soton.ac.uk:51023
Provided by: e-Prints Soton

Suggested articles



  1. (1997). An elastic-plastic model for a rough surface with an ion-plated metallic coating,” doi
  2. (1987). An elastic-plastic model for the contact of rough surfaces,” doi
  3. (2004). Can we achieve ultra-low resistivity in carbon nanotube-based metal composites?” doi
  4. (2001). Conduction properties of microscopic gold contact surfaces Source,” doi
  5. (1999). Contact measurements providing basic design data for microrelay actuators,” Sensors and Actuators A (Physical), v A73, n 1-2, doi
  6. (1999). Contact physics of gold microcontacts for MEMS switches,” doi
  7. (2006). Electrical Conduction Through Small Contact Spots,” doi
  8. (2005). Fundamental studies of Au contacts doi
  9. (2006). Method of characterizing electrical contact properties of carbon nanotube coated surfaces,” doi
  10. (2006). Microswitches with sputtered Au, AuPd,Au-on-AuPt, and AuPtCu alloy electric contacts,” doi
  11. (2003). Peer Review Aligned Carbon Nanotube forests using doi
  12. (2003). Quantum properties of atomicsized conductors,” Physics Reports, v 377, n 2-3,
  13. (1999). Size-dependent electrical constriction resistance for contacts of arbitrary size: doi
  14. (2005). The effects of surface contamination on resistance degradation of hot-switched low-force MEMS electrical contacts,” Electrical Contacts, doi
  15. (2006). The interrelation between adhesion, contact creep, and roughness on the life of gold contacts in radio-frequency microswitches,” doi
  16. (2006). The Loaded Surface Profile: A new technique for the investigation of contact
  17. (1966). The size effect and the nonlocal Boltzmann transport equation in orifice and disk geometry,” doi

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