Finite element model of a bi-layered gold coated carbon nanotube composite surface

Liu, Hong, McBride, John W., Down, Michael and Pu, Suan-Hui (2015) Finite element model of a bi-layered gold coated carbon nanotube composite surface. IEEE Transactions on Components Packaging and Manufacturing Technology, 5 (6). (doi:10.1109/TCPMT.2015.2428612).

Record type: Article

Abstract

Vertically aligned multiwalled carbon nanotubes (MWCNTs), with a gold (Au)-coated surface, have been shown to provide a stable contact resistance for electrical contact switching applications under low force conditions (micronewton to millinewton), with the MWCNT surface providing a compliant support for the conducting Au layer. In this paper, nanoindentation results are used in the development of a finite element contact model for the composite, referred to as Au/CNT. The results show that the surface is best modeled as a bilayered structure, in which the top layer is modeled as an elastic-plastic layer of the Au/CNT mixed material and the under layer as a CNT forest. The resultant model matches the experimental results for a range of samples with different thickness configurations.

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Published date: 1 June 2015

Organisations: Engineering Mats & Surface Engineerg Gp, Inst. Sound & Vibration Research, Energy Technology Group, Mechatronics, Engineering Science Unit