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Issue 17, 2018
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Controllable synthesis of nickel nanowires and its application in high sensitivity, stretchable strain sensor for body motion sensing

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Abstract

A facile, low-cost magnetic field-assisted chemical reduction method was proposed for synthesizing nickel nanowires (NiNWs) with both controllable diameter and high length to diameter (L/D) ratio at temperature as low as 60 °C. NiNWs with diameter as low as 180 ± 21 nm and L/D ratio as high as 300 were achieved by controlling the reaction temperature, NiCl2 concentration and the quantity of reductant in a magnetic field of 170 mT. Based on the NiNWs, a high-sensitivity and stretchable strain sensor with sandwich structure consisting of NiNWs and Ecoflex elastomer was proposed. Gauge factor as high as 200 was demonstrated up to a strain of 100%. Applications of the sensor in detecting body motion including finger gestures, facial expressions and different phonations are presented. This study provides a promising solution for smart sensors for next generation robotics as well as for human–machine interfacing applications.

Graphical abstract: Controllable synthesis of nickel nanowires and its application in high sensitivity, stretchable strain sensor for body motion sensing

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Publication details

The article was received on 29 Dec 2017, accepted on 04 Apr 2018 and first published on 04 Apr 2018


Article type: Paper
DOI: 10.1039/C7TC05970A
Citation: J. Mater. Chem. C, 2018,6, 4737-4745
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    Controllable synthesis of nickel nanowires and its application in high sensitivity, stretchable strain sensor for body motion sensing

    S. Wang, K. Chen, M. Wang, H. Li, G. Chen, J. Liu, L. Xu, Y. Jian, C. Meng, X. Zheng, S. Liu, C. Yin, Z. Wang, P. Du, S. Qu and C. W. Leung, J. Mater. Chem. C, 2018, 6, 4737
    DOI: 10.1039/C7TC05970A

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