Nanotip-induced ultrahigh pressure-sensitive composites: Principles,properties and applications |
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| Affiliation: | 1. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;3. Department of Mechanical & Energy Engineering, University of North Texas, Denton, TX 76203, USA;1. Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand;2. Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand;3. Department of Radiological Technology, Faculty of Associated medical sciences, Chaing Mai University, Chaing Mai 50200, Thailand;1. Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave W, Waterloo, Ontario, N2L 3G1, Canada;2. Chemical Engineering, University of Waterloo, 200 University Ave W, Waterloo, Ontario, N2L 3G1, Canada;1. School of Chemistry and Biological Engineering, University of Science & Technology Beijing, Beijing 100083, PR China;2. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China;1. Department of Mechanical Engineering, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran;2. Department of Mechanical Engineering, University of Guilan, P.O. Box 41635-3756, Rasht, Iran;1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. State Key Laboratory of Organic–Inorganic Composites, Department of Polymer Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;3. Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China;2. College of Physical Science and Technology, Yulin Normal University, Yulin, Guangxi 537000, China;3. Laser Technology Institute, Tianjin Polytechnic University, Tianjin 300387, China |
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| Abstract: | Spiky spherical nickel powders with sharp nanotips on their surface are excellent fillers for developing pressure-sensitive composites. The sharp nano-tips are responsible for generating field-assisted tunneling conduction, which leads to the strong responses of electrical conductivity of the composites to external force or deformation. The nanotip-induced ultrahigh pressure-sensitive composites can be used to develop new sensors, switches and controls for a wide range of applications including electronics, transport, space, medicine, defense, textiles, oil and gas, and civil engineering. In this paper, we examine a systematical review of research progress on the nanotip-induced ultrahigh pressure-sensitive composites, with attentions to mechanism of pressure-sensitivity, sensing performances, and applications of the composites. Future challenges in the development and application of the nanotip-induced ultrahigh pressure-sensitive composites are also discussed. |
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| Keywords: | A. Smart materials B. Electrical properties |
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