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All-Printed, Low-Cost, Tunable Sensing Range Strain Sensors Based on Ag Nanodendrites Conductive Ink for Wearable Electronics

Abstract

Flexible and wearable strain sensors with high stretchability and high sensitivity have been studied intensively. However, the achievement of low-cost, rapid mass production and high performance of wearable strain sensors remains a challenge. In this study, Ag nanodendrites (NDs) ink with good printability for varieties of substrates are prepared, which can be directly screen-printed on nitrile rubber to manufacture strain sensors. The printed strain sensors (PSSs) with diverse working strain ranges and its sensitivities can be simultaneously obtained by printing versatile geometric patterns. Comparatively, straight-line PSSs with the linewidth of 2 mm exhibit high electrical conductivity (1.14 × 105 S m-1), large sensing range (105%), high sensitivity (maximum gauge factor = 294.3), ultrafast response time (18 ms), and long-term stability (more than three weeks). Additionally, the sensing mechanism of the PSSs is further investigated by observing the surface topography. Eventually, the smart glove based on PSSs is used for monitoring human motion (finger bending, wrist bending, walking, etc.) and gesture actions, demonstrating the potential applications of Ag NDs-based PSSs in wearable electronic devices and human-machine interaction intelligent systems.

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Publication details

The article was received on 20 Sep 2018, accepted on 29 Nov 2018 and first published on 04 Dec 2018


Article type: Communication
DOI: 10.1039/C8TC04753G
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    All-Printed, Low-Cost, Tunable Sensing Range Strain Sensors Based on Ag Nanodendrites Conductive Ink for Wearable Electronics

    B. Tian, W. Yao, P. Zeng, X. Li, H. Wang, L. Liu, Y. Feng, C. Luo and W. Wu, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC04753G

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