Due to their extremely high thermal conductivity, carbon nanotubes (CNTs) have received many research interests for thermal management applications. An advanced thermal interface structure made by two opposing, partially over-lapped CNT arrays is designed for thermally connecting two contact surfaces. The performance of this interface structure is thermally characterized using diffraction-limited infrared microscopy. Significant temperature discontinuities are found at the end of the CNT-CNT contact region, which indicates a large thermal resistance between CNTs. Due to this inter-tube resistance, the thermal performance of the CNT-based interface structure is far below expectation, with a thermal resistance value of about 3.8 × 10−4 K·m2/W. Possible mechanisms of heat transfer between CNTs, which result in the large inter-tube resistance, are discussed.
Thermal Characterization of Two Opposing Carbon Nanotube Arrays Using Diffraction-Limited Infrared Microscopy
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Hu, X, Panzer, M, & Goodson, KE. "Thermal Characterization of Two Opposing Carbon Nanotube Arrays Using Diffraction-Limited Infrared Microscopy." Proceedings of the ASME 2005 International Mechanical Engineering Congress and Exposition. Heat Transfer, Part B. Orlando, Florida, USA. November 5–11, 2005. pp. 835-839. ASME. https://doi.org/10.1115/IMECE2005-83005
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