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Adv Healthc Mater. 2018 Nov;7(22):e1801033. doi: 10.1002/adhm.201801033. Epub 2018 Oct 19.

Two-Layered and Stretchable e-Textile Patches for Wearable Healthcare Electronics.

Author information

1
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
2
Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, Alberta, T5R 4H5, Canada.
3
Department of Communication Sciences and Disorders, University of Alberta, Edmonton, Alberta, T6G 2G4, Canada.
4
Department of Psychology, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada.
5
Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada.

Abstract

Wearable healthcare systems require skin-adhering electrodes that allow maximal comfort for patients as well as an electronics system to enable signal processing and transmittance. Textile-based electronics, known as "e-textiles," is a platform technology that allows comfort for patients. Here, two-layered e-textile patches are designed by controlled permeation of Ag-particle/fluoropolymer composite ink into a porous textile. The permeated ink forms a cladding onto the nanofibers in the textile substrate, which is beneficial for mechanical and electrical properties of the e-textile. The printed e-textile features conductivity of ≈3200 S cm-1 , whereas 1000 cycles of 30% uniaxial stretching causes the resistance to increase only by a factor of ≈5, which is acceptable in many applications. Controlling over the penetration depth enables a two-layer design of the e-textile, where the sensing electrodes and the conducting traces are printed in the opposite sides of the substrate. The formation of vertical interconnected access is remarkably simple as an injection from a syringe. With the custom-developed electronic circuits, a surface electromyography system with wireless data transmission is demonstrated. Furthermore, the dry e-textile patch collects electroencephalography with comparable signal quality to commercial gel electrodes. It is anticipated that the two-layered e-textiles will be effective in healthcare and sports applications.

KEYWORDS:

e-textiles; electroencephalography; stretchable electronics; surface electromyography; wetting

PMID:
30338670
DOI:
10.1002/adhm.201801033
[Indexed for MEDLINE]

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