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Applying Aluminum–Vertically-Aligned Carbon Nanotube Forests Composites for Heat Dissipation

Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan
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Nanomaterials 2019, 9(5), 758; https://doi.org/10.3390/nano9050758
Received: 23 April 2019 / Revised: 10 May 2019 / Accepted: 13 May 2019 / Published: 17 May 2019
(This article belongs to the Special Issue Thermal Transport in Nanostructures and Nanomaterials)
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Abstract

Vertically-aligned carbon nanotube forests (VACNTs) with excellent axial heat dissipation properties were formed on aluminum foil to dissipate heat. In addition, the heat dissipation efficiency of aluminum–VACNTs composites in this work was compared with that of commercially available mainstream thermal sheets under the same natural cooling conditions. Chemical vapor deposition (CVD) was employed as a synthesis method using a three-segment high-temperature furnace. Subsequently, the temperature changes in a heating body with the aluminum–VACNTs composites was measured over time subject to natural cooling. In addition, the performance was compared with copper and pyrolytic graphite sheets. The experimental results revealed that the heat dissipation efficiency of the flexible aluminum–VACNTs composites was higher than that of clean aluminum foil, a copper sheet, and a pyrolytic graphite sheet by up to 56%, 40%, and 20%, respectively. Moreover, this work also verified the height of the carbon nanotube (CNT) did not influence the heat dissipation efficiency, indicating that the time cost of synthesis could be reduced. View Full-Text
Keywords: vertically-aligned carbon nanotube; thermal sheets; heat dissipation efficiency; natural cooling; chemical vapor deposition vertically-aligned carbon nanotube; thermal sheets; heat dissipation efficiency; natural cooling; chemical vapor deposition
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Li, Y.-R.; Su, C.-C.; Chang, S.-H. Applying Aluminum–Vertically-Aligned Carbon Nanotube Forests Composites for Heat Dissipation. Nanomaterials 2019, 9, 758.

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