Increased real contact in thermal interfaces: A carbon nanotube/foil material

The thermal performance of an interface material comprised of a metal foil with dense, vertically oriented carbon nanotube (CNT) arrays synthesized on both of its surfaces is characterized for rough and smooth interfaces. The CNT/foil deforms in the interfaces by two mechanisms, CNT deformation and...

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Bibliographic Details
Published in:Applied physics letters 2007-02, Vol.90 (9), p.093513-093513-3
Main Authors: Cola, Baratunde A., Xu, Xianfan, Fisher, Timothy S.
Format: Article
Language:English
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Summary:The thermal performance of an interface material comprised of a metal foil with dense, vertically oriented carbon nanotube (CNT) arrays synthesized on both of its surfaces is characterized for rough and smooth interfaces. The CNT/foil deforms in the interfaces by two mechanisms, CNT deformation and foil deformation, that may significantly increase the number of CNT contact spots on both sides of the foil. As a result, thermal interface resistances less than 10 mm 2 K ∕ W are achieved at moderate pressures and compare very favorably to alternative interface materials and structures.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2644018