Wearable Electrodes Based on Common Fabrics

  • Author: Georg R. Meseck
  • Published: 11 May 2017
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Advanced Functional Materials/Wiley-VCH
thumbnail image: Wearable Electrodes Based on Common Fabrics

Pliable and breathable electrodes are a key building block for wearable electronics. Since plain-woven fabrics are ideal candidates with respect to haptic and aesthetic perception, there is a need for methods that can add conductivity to these fabrics.


Trisha L. Andrew, University of Massachusetts Amherst, USA, and colleagues have used a vapor deposition method to transform fourteen off-the-shelf fabrics (including cotton, linen, silk, wool, bamboo, and bast) into fabric electrodes. First, samples were placed on a heated stage inside a vacuum chamber (pictured). A stream of 3,4-ethylenedioxythuiophene (EDOT) was then delivered to the position of the sample stage and polymerization was induced by an intersecting second vapor stream of a FeCl3 catalyst.


The resulting poly(3,4-ethylenedioxythiophene) (PEDOT) coating did not affect the feel or breathability of the fabrics. The materials showed good conductivity with a linear dependence on length, thereby making them useful for large-scale applications. The researchers point out the robustness of their materials against body heat, bending, laundering, and ironing – important requisites for the incorporation into garments.


 

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