Printable low-cost and flexible carbon nanotube buckypaper strain sensors

Abstract : There is a need for cheap, flexible, and highly sensitive strain sensors that can detect micro strains prevalent in structural health monitoring, wearable technology, and micro-electromechanical systems (MEMS). We also need scalable and low-cost methods to sense deformations in wind turbine blades, artillery, composite structures, other large structures. Wearable technology will reshape the way we approach rehabilitation, physical training, and many high-dexterity tasks by harvesting data about body motions. We have developed low-profile and low-cost strain sensors from multi-walled carbon nanotube buckypaper (MWCNT-BP), which is a network of carbon nanotubes. Carbon nanotubes are mostly known for their unmatched strength and excellent conductivity; however, their ability to provide sensory information is also attractive. The CNT buckypaper sensors in this report are manufactured using simple desktop-inkjet-printing technology. The resultant sensors are 77% more sensitive than similar designs and nearly 700% more sensitive than commercial products. We display the sensors performance by integrating the sensors into a fabric glove for finger motion detection and gluing the sensors onto a carbon fiber composite structure for stress detection. © Copyright 2017. Used by the Society of the Advancement of Material and Process Engineering with permission.
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Conference papers
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Submitted on : Wednesday, April 11, 2018 - 6:21:57 PM
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J. Degraff, R. Liang, P.-J. Cottinet, F. Ganet, M.Q. Le. Printable low-cost and flexible carbon nanotube buckypaper strain sensors. Materials and Design, 2017, Unknown, Unknown Region. pp.1687-1699. ⟨hal-01764309⟩

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