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Issue 5, 2018
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2D end-to-end carbon nanotube conductive networks in polymer nanocomposites: a conceptual design to dramatically enhance the sensitivities of strain sensors

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Abstract

New generation wearable devices require mechanically compliant strain sensors with a high sensitivity in a full detecting range. Herein, novel 2D end-to-end contact conductive networks of multi-walled carbon nanotubes (MWCNTs) were designed and realized in an ethylene-α-octene block copolymer (OBC) matrix. The prepared strain sensor showed a high gauge factor (GF) of 248 even at a small strain (5%) and a linear resistance response throughout the whole strain range. The sensors also exhibited very good stretchability up to 300% and high cycling durability. This novel design solved the intrinsic problem of sensors based on carbon nanotube bundles, i.e., a long sliding phase before the disconnection of CNTs in a cost-effective and scalable way. This study rationalizes the 2D end-to-end contact concept to improve the sensitivity of the existing sensors and has great potential to be used in a wide variety of polymer based sensors.

Graphical abstract: 2D end-to-end carbon nanotube conductive networks in polymer nanocomposites: a conceptual design to dramatically enhance the sensitivities of strain sensors

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Publication details

The article was received on 30 Oct 2017, accepted on 15 Dec 2017 and first published on 19 Dec 2017


Article type: Communication
DOI: 10.1039/C7NR08077H
Citation: Nanoscale, 2018,10, 2191-2198
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    2D end-to-end carbon nanotube conductive networks in polymer nanocomposites: a conceptual design to dramatically enhance the sensitivities of strain sensors

    J. Pu, X. Zha, M. Zhao, S. Li, R. Bao, Z. Liu, B. Xie, M. Yang, Z. Guo and W. Yang, Nanoscale, 2018, 10, 2191
    DOI: 10.1039/C7NR08077H

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