title: Carbon nanotube dry adhesives with temperature-enhanced adhesion over a large temperature range.
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.
authors.affiliation: Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA.|State Key Laboratory of Materials Processing and Die &Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Xu
authors.affiliation: Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA.
authors.forename: Feng
authors.initials: F
authors.lastname: Du
authors.affiliation: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, Ohio 45433, USA.
authors.forename: Sabyasachi
authors.initials: S
authors.lastname: Ganguli
authors.affiliation: Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, Ohio 45433, USA.
authors.forename: Ajit
authors.initials: A
authors.lastname: Roy
authors.affiliation: Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA.|BUCT-CWRU International Joint Laboratory, College of Energy, Beijing University of Chemical Technology (CWRU), Beijing 100029, China.
authors.forename: Liming
authors.initials: L
authors.lastname: Dai