Stretchable Conductive Fibers of Ultrahigh Tensile Strain and Stable

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Stretchable Conductive Fibers of Ultra-high Tensile Strain and Stable Conductance Enabled by Worm-shape Graphene Microlayer Fengqiang Sun, Mingwei Tian, Xuantong Sun, Tailin Xu, Xuqing Liu, Shifeng Zhu, Xueji Zhang, and Lijun Qu Nano Lett., Just Accepted Manuscript • DOI: 10.1021/acs.nanolett.9b02862 • Publication Date (Web): 21 Aug 2019 Downloaded from pubs.acs.org on August 22, 2019

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Nano Letters

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Stretchable Conductive Fibers of Ultra-high Tensile Strain and

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Stable Conductance Enabled by Worm-shape Graphene Microlayer

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Fengqiang Suna, 1, Mingwei Tiana,1,*, Xuantong Sund,1, Tailin Xub,*, Xuqing Liud,

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Shifeng Zhua , Xueji Zhangc,*, Lijun Qua,* a

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Research Center for Intelligent and Wearable Technology, College of Textiles and

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Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative

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Innovation Center for Eco-Textiles of Shandong Province, Qingdao University,

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Qingdao, Shandong, 266071, P.R. China b Research

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Center for Bioengineering and Sensing Technology, University of

Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, P. R. China

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c School

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of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, Guangdong 518060, P.R.China

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of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.

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Abstract

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Stretchable electrical conductors have demonstrated promising potentials in a wide

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range of wearable electronic devices, the conductivity of most of reported stretchable

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conductive fibers will be changed if be stretched or strained. But however, stable

These authors equally contributed to this work Corresponding author: [email protected] (Prof. Tian), [email protected] (Prof. Xu), [email protected] (Prof. Zhang), [email protected] (Prof. Qu) 1



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conductance is essential for wearable and stretchable device, to ensure the

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performance of wearable devices is stable. Inspired by the peristaltic behavior of

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arthropods, we designed a graphene coating similar to the caterpillar structure on the

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PU fiber surface, enabled by coating the worm-shape graphene microlayer onto

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polyurethane filaments. Such worm-shape filaments can be stretched up to 1010%

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with wide reversible electro-response range (0