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A super stretchable and sensitive strain sensor based on a carbon nanocoil network fabricated by a simple peeling-off approach

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Abstract

Despite the tremendous progress in wearable and smart strain sensors, it is still a challenge to develop a highly sensitive, stretchable, and low-cost sensor. Herein, a super stretchable and sensitive strain sensor fabricated by a simple peeling-off approach is reported. The strain sensor is prepared by peeling off a thin as-grown carbon nanocoil (CNC) film from a substrate using a stretchable polydimethylsiloxane (PDMS) film or a flexible adhesive tape. Herein, we took advantage of the spring-like morphology and the original network of the CNCs. The sensor is used to detect pressure, tension, and bend. The strain range and maximum real-time gauge factor reach 260% and 190, respectively, with a rapid response time (less than 12 ms). The contrary resistance responses under tension and bend make it possible to distinguish the direction and type of strain. The sensor is used to monitor a strain over a wide range, from human pulse to the impact of a 0.9 kg weight. The high sensitivity and stretchability, easy and cheap fabrication, and effective interaction with human motions suggest the great potential applications of this sensor in wearable strain sensors and smart systems.

Graphical abstract: A super stretchable and sensitive strain sensor based on a carbon nanocoil network fabricated by a simple peeling-off approach

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Publication details

The article was received on 26 Jul 2017, accepted on 04 Oct 2017 and first published on 05 Oct 2017


Article type: Paper
DOI: 10.1039/C7NR05486F
Citation: Nanoscale, 2017, Advance Article
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    A super stretchable and sensitive strain sensor based on a carbon nanocoil network fabricated by a simple peeling-off approach

    C. Deng, L. Pan, D. Zhang, C. Li and H. Nasir, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR05486F

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