TY - GEN
T1 - Skin-Temperature-Responsive In Situ Hydrogel for Enhanced EMG Recording of Lumbar Muscle
AU - Zhang, Mingxuan
AU - Lv, Chujie
AU - Wang, Yuqi
AU - Wang, Yongtang
AU - Wu, Zhuoxun
AU - Shi, Zhizheng
AU - Liu, Yiming
AU - Li, Dongxue
AU - Zhao, Yinchao
AU - Dong, Qiuchen
AU - Lu, Qifeng
AU - Chen, Ruizhan
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - Hydrogel electrodes have been widely applied in surface electromyography (EMG) signal recording due to their excellent flexibility and electrical conductivity. However, most hydrogel electrodes employ a pre-formed method, which often results in low adhesion force and poor conformity to complex skin topographies. To address the challenge, this paper proposed a skin-temperature-responsive in situ hydrogel (GPP) based on the synergistic combination of gelatin, L-Pyrrolidone Carboxylic Acid-Na (PCA-Na), and plant-derived natural polysaccharides. The GPP rapidly gels at skin temperature around 30°C, forming a highly adhesive hydrogel with strong skin adhesion of 0.38N/cm and a low elastic modulus of 27kPa. As a result, a high signal-to-noise ratio (SNR) of 35.2dB was achieved and it maintains low and stable impedance (28 kΩ) within the range of 0.1-100 Hz. As a promising in situ-forming hydrogel, GPP provides a foundation for the development of next-generation bioelectronic interfaces and offers potential applications in long-term monitoring and analysis of lumbar muscle activity.
AB - Hydrogel electrodes have been widely applied in surface electromyography (EMG) signal recording due to their excellent flexibility and electrical conductivity. However, most hydrogel electrodes employ a pre-formed method, which often results in low adhesion force and poor conformity to complex skin topographies. To address the challenge, this paper proposed a skin-temperature-responsive in situ hydrogel (GPP) based on the synergistic combination of gelatin, L-Pyrrolidone Carboxylic Acid-Na (PCA-Na), and plant-derived natural polysaccharides. The GPP rapidly gels at skin temperature around 30°C, forming a highly adhesive hydrogel with strong skin adhesion of 0.38N/cm and a low elastic modulus of 27kPa. As a result, a high signal-to-noise ratio (SNR) of 35.2dB was achieved and it maintains low and stable impedance (28 kΩ) within the range of 0.1-100 Hz. As a promising in situ-forming hydrogel, GPP provides a foundation for the development of next-generation bioelectronic interfaces and offers potential applications in long-term monitoring and analysis of lumbar muscle activity.
KW - adhesion
KW - electromyography
KW - in situ hydrogel
KW - lumbar muscle activity
KW - skin-temperature-responsive
UR - https://www.scopus.com/pages/publications/105019749893
U2 - 10.1109/ICAMechS68051.2025.11181042
DO - 10.1109/ICAMechS68051.2025.11181042
M3 - Conference Proceeding
AN - SCOPUS:105019749893
T3 - International Conference on Advanced Mechatronic Systems, ICAMechS
SP - 262
EP - 266
BT - Conference Proceedings - 2025 International Conference on Advanced Mechatronic Systems, ICAMechS 2025
PB - IEEE Computer Society
T2 - 2025 International Conference on Advanced Mechatronic Systems, ICAMechS 2025
Y2 - 19 September 2025 through 22 September 2025
ER -