Conformal phase-transition hydrogel interfaces for high fidelity electrophysiological sensing and data-driven inference

Soft Matter, vol. 22, pp. 4134–4150

Abstract

), and low dehydration (∼13% water loss after 30 days). This combination enables stable, week-long acquisition of high-fidelity sEMG, ECG, and EEG signals. The utility of these signals for data-driven analytics was quantitatively validated through a convolutional neural network, which achieved high accuracy in gesture recognition using the long-term sEMG data. Furthermore, the electrode-skin impedance and EEG signal fidelity remained stable over a seven-day period, outperforming standard conductive paste that typically dries within hours. This work demonstrates how phase-transition-enabled hydrogel electrodes can bridge material design with data-driven physiological analysis, offering a general approach for intelligent wearable bioelectronics.

Authors 6

1. Xuelin Li

   Ningbo University

   Affiliation as printed

   Center for Mechanics Plus under Extreme Environments, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China

2. Weiyang Tang Aachen Faculty of Georesources and Materials Engineering

   RWTH Aachen University

   Affiliation as printed

   Faculty of Georesources and Materials Engineering, RWTH Aachen University, Aachen 52062, Germany

3. Mingyang Wang

   Ningbo University

   Affiliation as printed

   Center for Mechanics Plus under Extreme Environments, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China

4. Giacomo Moretti

   University of Trento

   Affiliation as printed

   Department of Industrial Engineering, University of Trento, Trento, 38123, Italy

5. Ji Lin

   Ningbo University

   Affiliation as printed

   Center for Mechanics Plus under Extreme Environments, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China

6. Chuanqian Shi

   Ningbo University

   Affiliation as printed

   Center for Mechanics Plus under Extreme Environments, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China

   Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University, Ningbo 315211, Zhejiang, China

   Shaoxing Yuanju Technology Co., Ltd, Shaoxing 311816, Zhejiang, China