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Issue 11, 2018
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Highly sensitive and selective multidimensional resistive strain sensors based on a stiffness-variant stretchable substrate

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Abstract

Highly stretchable strain sensors that are capable of collecting complex multi-axial, multidimensional strain information in real time are crucial in practical applications for human motion detection. Here we present a highly sensitive and selective multidimensional resistive strain sensor based on a monolithic integration of a stiffness-variant stretchable substrate and sensing film comprising a cross-shaped silver nanowire percolation network in a single device. The multidimensional strain sensor efficiently distinguishes strains in various directions with a large gauge factor (GF) of >20 and a wide strain-detectable range of up to 60%. The sensor also features a maximum difference in GF between the x- and y-axes of >20 and long-term performance stability for up to 500 strain cycles. The practicality of the sensor as a human motion detector is demonstrated by attaching it directly to a part of the human body and measuring the multidimensional strains that occur during motions in real time.

Graphical abstract: Highly sensitive and selective multidimensional resistive strain sensors based on a stiffness-variant stretchable substrate

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Publication details

The article was received on 01 Nov 2017, accepted on 25 Jan 2018 and first published on 26 Jan 2018


Article type: Paper
DOI: 10.1039/C7NR08118A
Citation: Nanoscale, 2018,10, 5105-5113
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    Highly sensitive and selective multidimensional resistive strain sensors based on a stiffness-variant stretchable substrate

    S. Ha, S. Ha, M. Jeon, J. H. Cho and J. Kim, Nanoscale, 2018, 10, 5105
    DOI: 10.1039/C7NR08118A

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