Robust Skin-adaptable Bioelectronics with Self-adhesive Polysaccharide Hydrogel Conductors for Multimodal Physiological Signal Acquisition

Shan Xia; Lei Yang; Ming Wang; Qi Wang; Yu-Jiao Bi; Guang-Hui Gao

doi:10.1007/s10118-025-3533-1

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Robust Skin-adaptable Bioelectronics with Self-adhesive Polysaccharide Hydrogel Conductors for Multimodal Physiological Signal Acquisition

RESEARCH ARTICLE | Updated：2026-02-13

- Robust Skin-adaptable Bioelectronics with Self-adhesive Polysaccharide Hydrogel Conductors for Multimodal Physiological Signal Acquisition
- Chinese Journal of Polymer Science Vol. 44, Issue 3, Pages: 882-893(2026)
- Affiliations：
  
  Polymeric and Soft Materials Laboratory, School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China
- Author bio：
  
  xiashan@ccut.edu.cn (S.X.)
  ghgao@ccut.edu.cn (G.H.G.)
- Funds：
- DOI：10.1007/s10118-025-3533-1
  CLC：
- Received：12 September 2025，
  
  Accepted：15 December 2025，
  
  Online First：06 February 2026，
  
  Published：15 March 2026
- Accepted：
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Xia, S.; Yang, L.; Wang, M.; Wang, Q.; Bi, Y. J.; Gao, G. H. Robust skin-adaptable bioelectronics with self-adhesive polysaccharide hydrogel conductors for multimodal physiological signal acquisition. Chinese J. Polym. Sci. 2026, 44, 882–893

Shan Xia, Lei Yang, Ming Wang, et al. Robust Skin-adaptable Bioelectronics with Self-adhesive Polysaccharide Hydrogel Conductors for Multimodal Physiological Signal Acquisition[J]. Chinese Journal of Polymer Science, 2026, 44(3): 882-893.
Xia, S.; Yang, L.; Wang, M.; Wang, Q.; Bi, Y. J.; Gao, G. H. Robust skin-adaptable bioelectronics with self-adhesive polysaccharide hydrogel conductors for multimodal physiological signal acquisition. Chinese J. Polym. Sci. 2026, 44, 882–893 DOI： 10.1007/s10118-025-3533-1.

Shan Xia, Lei Yang, Ming Wang, et al. Robust Skin-adaptable Bioelectronics with Self-adhesive Polysaccharide Hydrogel Conductors for Multimodal Physiological Signal Acquisition[J]. Chinese Journal of Polymer Science, 2026, 44(3): 882-893. DOI： 10.1007/s10118-025-3533-1.

摘要

A hydrogel with high stretchability

strong adhesion

fatigue resistance and high electrical conductivity can be applied to flexible strain sensing and physiological signal monitoring.

Abstract

The currently reported conductive hydrogels are mainly used to detect the mechanical signals of human movement

whereas the application of detecting weak electrophysiological signals in epidermal electrodes is still limited by a low signal-to-noise ratio and motion artifacts. In this study

a one-pot method was used to prepare a hydrogel conductor with excellent flexibility

self-adhesiveness

and compliance by introducing chitosan quaternary ammonium salt (HAAC) and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) into the polyacrylamide (PAAm) hydrogel network. By adjusting the AMPS and HAAC contents

the hydrogel showed skin-like mechanical properties and surface adhesion

successfully eliminating the gap with the skin surface. The self-adhesive hydrogel showed a lower impedance (approximately 190 kΩ) than commercial Ag/AgCl electrodes. Notably

the hydrogel electrodes exhibited a significantly higher signal-to-noise ratio (SNR) than the commercial electrodes at the same level of muscle contraction. The hydrogel electrodes could accurately detect dynamic weak EMG signals and successfully drive the prosthetic hand to grasp without errors. Importantly

the combination of hydrogel strain sensors and epidermal electrodes can quantify the mode

frequency

and intensity of human movement

which has broad application prospects in data acquisition for daily exercise

fitness

and rehabilitation.

关键词

Keywords

references

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