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Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities

Surface electromyography (sEMG) sensors are widely used in the fields of ergonomics, sports science, and medical research. However, current sEMG sensors cannot recognize the various exercise intensities efficiently because of the strain interference, low conductivity, and poor skin-conformability of...

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Autores principales: Tang, Daxiu, Yu, Zhe, He, Yong, Asghar, Waqas, Zheng, Ya-Nan, Li, Fali, Shi, Changcheng, Zarei, Roozbeh, Liu, Yiwei, Shang, Jie, Liu, Xiang, Li, Run-Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143104/
https://www.ncbi.nlm.nih.gov/pubmed/32106451
http://dx.doi.org/10.3390/mi11030239
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author Tang, Daxiu
Yu, Zhe
He, Yong
Asghar, Waqas
Zheng, Ya-Nan
Li, Fali
Shi, Changcheng
Zarei, Roozbeh
Liu, Yiwei
Shang, Jie
Liu, Xiang
Li, Run-Wei
author_facet Tang, Daxiu
Yu, Zhe
He, Yong
Asghar, Waqas
Zheng, Ya-Nan
Li, Fali
Shi, Changcheng
Zarei, Roozbeh
Liu, Yiwei
Shang, Jie
Liu, Xiang
Li, Run-Wei
author_sort Tang, Daxiu
collection PubMed
description Surface electromyography (sEMG) sensors are widely used in the fields of ergonomics, sports science, and medical research. However, current sEMG sensors cannot recognize the various exercise intensities efficiently because of the strain interference, low conductivity, and poor skin-conformability of their electrodes. Here, we present a highly conductive, strain-insensitive, and low electrode–skin impedance elastic sEMG electrode, which consists of a three-layered structure (polydimethylsiloxane/galinstan + polydimethylsiloxane/silver-coated nickel + polydimethylsiloxane). The bottom layer of the electrode consists of vertically conductive magnetic particle paths, which are insensitive to stretching strain, collect sEMG charge from human skin, and finally transfer it to processing circuits via an intermediate layer. Our skin-friendly electrode exhibits high conductivity (0.237 and 1.635 mΩ·cm resistivities in transverse and longitudinal directions, respectively), low electrode–skin impedance (47.23 kΩ at 150 Hz), excellent strain-insensitivity (10% change of electrode–skin impedance within the 0–25% strain range), high fatigue resistance (>1500 cycles), and good conformability with skin. During various exercise intensities, the signal-to-noise ratio (SNR) of our electrode increased by 22.53 dB, which is 206% and 330% more than that of traditional Ag/AgCl and copper electrode, respectively. The ability of our electrode to efficiently recognize various exercise intensities confirms its great application potential for the field of sports health.
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spelling pubmed-71431042020-04-14 Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities Tang, Daxiu Yu, Zhe He, Yong Asghar, Waqas Zheng, Ya-Nan Li, Fali Shi, Changcheng Zarei, Roozbeh Liu, Yiwei Shang, Jie Liu, Xiang Li, Run-Wei Micromachines (Basel) Article Surface electromyography (sEMG) sensors are widely used in the fields of ergonomics, sports science, and medical research. However, current sEMG sensors cannot recognize the various exercise intensities efficiently because of the strain interference, low conductivity, and poor skin-conformability of their electrodes. Here, we present a highly conductive, strain-insensitive, and low electrode–skin impedance elastic sEMG electrode, which consists of a three-layered structure (polydimethylsiloxane/galinstan + polydimethylsiloxane/silver-coated nickel + polydimethylsiloxane). The bottom layer of the electrode consists of vertically conductive magnetic particle paths, which are insensitive to stretching strain, collect sEMG charge from human skin, and finally transfer it to processing circuits via an intermediate layer. Our skin-friendly electrode exhibits high conductivity (0.237 and 1.635 mΩ·cm resistivities in transverse and longitudinal directions, respectively), low electrode–skin impedance (47.23 kΩ at 150 Hz), excellent strain-insensitivity (10% change of electrode–skin impedance within the 0–25% strain range), high fatigue resistance (>1500 cycles), and good conformability with skin. During various exercise intensities, the signal-to-noise ratio (SNR) of our electrode increased by 22.53 dB, which is 206% and 330% more than that of traditional Ag/AgCl and copper electrode, respectively. The ability of our electrode to efficiently recognize various exercise intensities confirms its great application potential for the field of sports health. MDPI 2020-02-25 /pmc/articles/PMC7143104/ /pubmed/32106451 http://dx.doi.org/10.3390/mi11030239 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tang, Daxiu
Yu, Zhe
He, Yong
Asghar, Waqas
Zheng, Ya-Nan
Li, Fali
Shi, Changcheng
Zarei, Roozbeh
Liu, Yiwei
Shang, Jie
Liu, Xiang
Li, Run-Wei
Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities
title Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities
title_full Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities
title_fullStr Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities
title_full_unstemmed Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities
title_short Strain-Insensitive Elastic Surface Electromyographic (sEMG) Electrode for Efficient Recognition of Exercise Intensities
title_sort strain-insensitive elastic surface electromyographic (semg) electrode for efficient recognition of exercise intensities
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143104/
https://www.ncbi.nlm.nih.gov/pubmed/32106451
http://dx.doi.org/10.3390/mi11030239
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