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A Programmable Dual-Regime Spray for Large-Scale and Custom-Designed Electronic Textiles.

Taehoo Chang1, Semih Akin2, Min Ku Kim3,4

  • 1School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA.

Advanced Materials (Deerfield Beach, Fla.)
|December 24, 2021
PubMed
Summary

Researchers developed a new spray method to create custom electronic textiles (e-textiles) for wearable healthcare. This innovation enables high-resolution, large-area fabric customization for improved vital sign monitoring.

Keywords:
ambulatory health monitoringdual-regime sprayselectronic textilesprogrammable direct patterningtelehealthcare

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Wearable Technology

Background:

  • The demand for wearable healthcare devices drives advancements in electronic textiles (e-textiles) for ambulatory monitoring.
  • Clinical adoption of e-textiles is hindered by limitations in producing custom, high-resolution, large-area functional fabrics.
  • Existing methods lack the scalability and precision required for personalized e-textile applications.

Purpose of the Study:

  • To introduce a novel method for fabricating custom-designed e-textiles with high spatial resolution over large areas.
  • To demonstrate the capability of producing e-textiles that maintain intrinsic fabric properties and comfort.
  • To validate the utility of these e-textiles for high-fidelity physiological signal recording in real-world settings.

Main Methods:

  • A programmable dual-regime spray system was utilized for direct writing of functional nanoparticles onto various fabrics.
  • The process achieved sub-millimeter resolution at meter-scale fabric production.
  • Fabric properties (mechanical flexibility, breathability) and durability (laundry cycles) were assessed.

Main Results:

  • The developed e-textiles maintained fabric's natural properties, including flexibility, water-vapor permeability, and comfort.
  • E-textiles conformed to diverse body shapes for high-fidelity ambulatory physiological and electrophysiological signal recording.
  • Successful pilot field tests with a large animal demonstrated scalability and broad applicability.

Conclusions:

  • The programmable dual-regime spray method enables rapid prototyping of custom e-textiles for diverse clinical needs.
  • This approach overcomes key challenges in large-area, high-resolution e-textile fabrication.
  • The technology shows significant potential for advancing wearable healthcare and remote monitoring.