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Core-Sheath Braided Yarn-Based Wearable Bioelectronics for Sweat Capture and Multimodal Sensing.

Shanshan Gong1, Xuanqi Rao2,3, Yun Li1

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This study introduces a novel wearable biosensing textile for continuous health monitoring. The comfortable, integrated sensor detects multiple sweat biomarkers, offering a low-cost solution for multiparameter health tracking.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Wearable Technology

Background:

  • Wearable biosensing textiles offer potential for continuous health monitoring via sweat biomarker detection.
  • Existing flexible electrochemical textiles struggle with multibiomarker integration, large surface area requirements, and high sweat volume needs.

Purpose of the Study:

  • To develop a highly integrated sweat sensor for wearable biosensing textiles.
  • To overcome limitations in multibiomarker detection and sensor activation in current wearable technologies.

Main Methods:

  • Fabrication of a multifunctional core-sheath sensor yarn using an improved braiding process.
  • Integration of multiple, spatially isolated electrodes within a single yarn.
  • Utilizing a wettability gradient and yarn structure to direct sweat flow and shorten transmission paths.
  • Employing a helix-crossing braiding structure to enhance mechanical strength and stability.

Main Results:

  • Demonstrated a highly integrated, three-dimensional, spatially isolated electrode system within a single yarn.
  • Achieved directional sweat flow with a shortened transmission path through synergistic wettability and structural design.
  • Enhanced mechanical strength and dynamic deformation stability of the wearable sensor.
  • Combined high sensitivity with user comfort for practical health monitoring.

Conclusions:

  • The developed core-sheath sensor yarn represents a significant advancement in wearable biosensing textiles.
  • This technology offers a promising, low-cost approach for mass production of multiparameter health monitoring devices.
  • The sensor's high sensitivity, comfort, and stability pave the way for next-generation continuous health surveillance.