Conductive and Elastic 3D Helical Fibers for Use in Washable and Wearable Electronics

Zihang Yang, Zirui Zhai, Zeming Song, Yingzhu Wu, Jiahao Liang, Yingfa Shan, Jinren Zheng, Haichao Liang, Hanqing Jiang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Due to the intrinsic properties of fabrics, fabric-based wearable systems have certain advantages over elastomeric material-based stretchable electronics. Here, a method to produce highly stretchable, conductive, washable, and solderable fibers that consist of elastic polyurethane (PU) fibers and conductive Cu fibers, which are used as interconnects for wearable electronics, is reported. The 3D helical shape results from stress relaxation of the prestretched PU fiber and the plasticity of the Cu fiber, which provides a predictable way to manipulate the morphology of the 3D fibers. The present fibers have superior mechanical and electrical properties to many other conductive fibers fabricated through different approaches. The 3D helical fibers can be readily integrated with fabrics and other functional components to build fabric-based wearable systems.

Original languageEnglish (US)
Article number1907495
JournalAdvanced Materials
Volume32
Issue number10
DOIs
StatePublished - Mar 1 2020

Keywords

  • 3D helical shape
  • conductive fibers
  • stretchable and
  • washable electronics
  • wearable electronics

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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