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Soft fibers with magnetoelasticity for wearable electronics

Author

Listed:
  • Xun Zhao

    (University of California, Los Angeles)

  • Yihao Zhou

    (University of California, Los Angeles)

  • Jing Xu

    (University of California, Los Angeles)

  • Guorui Chen

    (University of California, Los Angeles)

  • Yunsheng Fang

    (University of California, Los Angeles)

  • Trinny Tat

    (University of California, Los Angeles)

  • Xiao Xiao

    (University of California, Los Angeles)

  • Yang Song

    (University of California, Los Angeles)

  • Song Li

    (University of California, Los Angeles)

  • Jun Chen

    (University of California, Los Angeles)

Abstract

Magnetoelastic effect characterizes the change of materials’ magnetic properties under mechanical deformation, which is conventionally observed in some rigid metals or metal alloys. Here we show magnetoelastic effect can also exist in 1D soft fibers with stronger magnetomechanical coupling than that in traditional rigid counterparts. This effect is explained by a wavy chain model based on the magnetic dipole-dipole interaction and demagnetizing factor. To facilitate practical applications, we further invented a textile magnetoelastic generator (MEG), weaving the 1D soft fibers with conductive yarns to couple the observed magnetoelastic effect with magnetic induction, which paves a new way for biomechanical-to-electrical energy conversion with short-circuit current density of 0.63 mA cm−2, internal impedance of 180 Ω, and intrinsic waterproofness. Textile MEG was demonstrated to convert the arterial pulse into electrical signals with a low detection limit of 0.05 kPa, even with heavy perspiration or in underwater situations without encapsulations.

Suggested Citation

  • Xun Zhao & Yihao Zhou & Jing Xu & Guorui Chen & Yunsheng Fang & Trinny Tat & Xiao Xiao & Yang Song & Song Li & Jun Chen, 2021. "Soft fibers with magnetoelasticity for wearable electronics," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-27066-1
    DOI: 10.1038/s41467-021-27066-1
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    References listed on IDEAS

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    1. Matteo Alberghini & Seongdon Hong & L. Marcelo Lozano & Volodymyr Korolovych & Yi Huang & Francesco Signorato & S. Hadi Zandavi & Corey Fucetola & Ihsan Uluturk & Michael Y. Tolstorukov & Gang Chen & , 2021. "Sustainable polyethylene fabrics with engineered moisture transport for passive cooling," Nature Sustainability, Nature, vol. 4(8), pages 715-724, August.
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    1. Sixing Xiong & Kenjiro Fukuda & Kyohei Nakano & Shinyoung Lee & Yutaro Sumi & Masahito Takakuwa & Daishi Inoue & Daisuke Hashizume & Baocai Du & Tomoyuki Yokota & Yinhua Zhou & Keisuke Tajima & Takao , 2024. "Waterproof and ultraflexible organic photovoltaics with improved interface adhesion," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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