MWCNT-COOH/PDMS based dry ECG electrodes for ambulatory ECG recordings

•ECG electrodes fabricated using MWCNT-COOH and PDMS using molds.•Fabrication using 2-step dispersion: magnetic-stirring followed by ultrasonication.•Electrode concentration: increased capacitance, decreased resistance and impedance.•ECG results of 4 wt% fabricated electrodes comparable to Ag/AgCl e...

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Bibliographic Details
Published inMaterials letters Vol. 307; p. 130972
Main Authors Gandhi, Bani, Raghava, N.S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.01.2022
Elsevier BV
Subjects
Electrocardiogram
Electrodes
Internet of Things
IoT
Materials science
Multi wall carbon nanotubes
MWCNT-COOH
PDMS
Percolation
Polydimethylsiloxane
Remote monitoring
MWCNT-COOH
Electrocardiogram
PDMS
IoT
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Summary:•ECG electrodes fabricated using MWCNT-COOH and PDMS using molds.•Fabrication using 2-step dispersion: magnetic-stirring followed by ultrasonication.•Electrode concentration: increased capacitance, decreased resistance and impedance.•ECG results of 4 wt% fabricated electrodes comparable to Ag/AgCl electrodes.•Electrodes cause no adverse effects to skin; suitable for continuous ECG monitor. Highly conductive electrodes were fabricated using carboxylic functionalized Multiwalled Carbon Nanotubes (MWCNT-COOH), and Polydimethylsiloxane (PDMS) for continuous and long-term ECG monitoring. A two-step dispersion method was followed: first using magnetic stirring, and the second using ultrasonication. Thirteen electrodes with different concentrations of CNTs were fabricated using molds. The percolation threshold was observed at 4.5 wt%. These electrodes were subject to real-time and remote monitoring achieved by an Internet-of-Things (IoT) system.
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ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.130972