A novel double-sided fabric strain sensor array fabricated with a facile and cost-effective process

Xiaobin Chen, Zhongliang Zhang, Lin Shu (Corresponding Author), Xiaoming Tao (Corresponding Author), Xiangmin Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Electronic textiles face challenge in fabricating stretchable, double-sided circuits with reliable interfaces. In this study, a double-sided strain sensor array was designed and prepared on an elastic fabric substrate by printing the sensing areas and interconnects using a single identical conductive composite paste. By controlling the viscosity of the printing paste, the conductive tracks on both sides of the porous fabric were insulated, except for the via holes at the specified positions. Through fabrication using a facile and cost-effective method, the fabric strain sensor array exhibited preferable consistency, a reliable connection interface, sufficient environmental stability, and long fatigue life (∼10,000 cyclic loadings). An optimized scanning readout approach was applied to read the signals of the sensor array with an error of less than 1%. Additionally, the spatial strain distribution of the knee movement captured by the sensor array demonstrated its advantages in capturing human dynamic motions. This method paves the way for the design and fabrication of stretchable-fabric-based sensor arrays and circuits that can be applied to intelligent wearable systems.

Original languageEnglish
Article number115208
JournalSensors and Actuators A: Physical
Volume370
DOIs
Publication statusPublished - May 2024

Keywords

  • Cost-effective
  • Double-sided circuit
  • Fabric sensor array
  • Readout method

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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