Title |
Carbon nanotube dry adhesives with temperature-enhanced adhesion over a large temperature range
|
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Published in |
Nature Communications, November 2016
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DOI | 10.1038/ncomms13450 |
Pubmed ID | |
Authors |
Ming Xu, Feng Du, Sabyasachi Ganguli, Ajit Roy, Liming Dai |
Abstract |
Conventional adhesives show a decrease in the adhesion force with increasing temperature due to thermally induced viscoelastic thinning and/or structural decomposition. Here, we report the counter-intuitive behaviour of carbon nanotube (CNT) dry adhesives that show a temperature-enhanced adhesion strength by over six-fold up to 143 N cm(-2) (4 mm × 4 mm), among the strongest pure CNT dry adhesives, over a temperature range from -196 to 1,000 °C. This unusual adhesion behaviour leads to temperature-enhanced electrical and thermal transports, enabling the CNT dry adhesive for efficient electrical and thermal management when being used as a conductive double-sided sticky tape. With its intrinsic thermal stability, our CNT adhesive sustains many temperature transition cycles over a wide operation temperature range. We discover that a 'nano-interlock' adhesion mechanism is responsible for the adhesion behaviour, which could be applied to the development of various dry CNT adhesives with novel features. |
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