An experimental investigation of the contact area between a glass plane and both metallic and carbon- nano-tube electrical contacts


McBride, J.W., Cross, K.J and Zhao, Z. (2008) An experimental investigation of the contact area between a glass plane and both metallic and carbon- nano-tube electrical contacts At Holm 2008 - 54th IEEE Holm Conference on Electrical Contacts. 27 - 29 Oct 2008. , pp. 325-331.

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Description/Abstract

The work presented follows an initial study into a method for the 3-dimensional (3D) scanning of an electrical contact surface, while in physical contact with a glass plane. The method allows the measurement of contact force and the associated contact area in contact with the glass. A new test apparatus is presented which allows improved control of the contact force and improved analysis of the contact area. The materials investigated include Ag and Cu contact surfaces and a multi-walled carbon nano-tube-Au composite surface. The methodology uses a con-focal laser scanner with 2?m spot size and 10nm resolution to measure the contact surface height (Z) through the glass plane. A levelling procedure is used to ensure that the true contact region is measured, and a data grid resolution of 0.1?m in the X,Y plane is used to identify the contact regions. The contact asperities are identified and compared with measurements using an AFM probe. The results are used to provide input data to the Greenwood-Williamson model for contact mechanics.

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: Holm 2008 - 54th IEEE Holm Conference on Electrical Contacts, 2008-10-27 - 2008-10-29
Related URLs:
Keywords: contact mechanics, contact area, carbon-nano-tube Au composite surface
Subjects:
ePrint ID: 63822
Date :
Date Event
29 October 2008Published
Date Deposited: 06 Nov 2008
Last Modified: 16 Apr 2017 17:22
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/63822

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