A fully textile-based skin pH sensor
- Authors
- Choi, Min-Young; Lee, Minji; Kim, Ji-Hye; Kim, Sooyoung; Choi, Jonghoon; So, Ju-Hee; Koo, Hyung-Jun
- Issue Date
- Jun-2022
- Publisher
- SAGE Publications Ltd
- Keywords
- agarose; carbon nanotubes; pH sensor; polyaniline; potential variations; Textile
- Citation
- Journal of Industrial Textiles, v.51, no.1_SUPPL, pp 441S - 457S
- Journal Title
- Journal of Industrial Textiles
- Volume
- 51
- Number
- 1_SUPPL
- Start Page
- 441S
- End Page
- 457S
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/55698
- DOI
- 10.1177/15280837211073361
- ISSN
- 1528-0837
1530-8057
- Abstract
- (Figure presented.) © The Author(s) 2022.This paper presents a textile-based pH sensor with high flexibility fabricated by printing a polymer composite as a working electrode and Ag/AgCl/solid electrolyte as a reference electrode on a textile substrate. The textile working electrode is composed of polyaniline, carbon nanotubes, and agarose printed on the textile. A thermoplastic polyurethane overlayer hot-pressed on the textile substrates provides a smooth hydrophobic surface, enabling a more stable formation of the composite films with a reliable output signal. The textile reference electrode is fabricated by printing Ag/AgCl paste and solid electrolyte. The fully textile-based pH sensor, by integrating the textile working and reference electrodes, exhibits a good sensitivity of 45.9 mV/pH with high linearity. The textile pH sensor maintains excellent performance and repeatability with 93% retention even in a bent state and after 1000 bending cycles. Finally, it is demonstrated that the textile pH sensor can detect the pH change on a piece of porcine skin. © The Author(s) 2022.
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