Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/47415
Title: Investigation of graphene-coated Ag/AgCl electrode performance in surface electromyography measurement
Authors: Alcan, Veysel
Harputlu, Ersan
Ünlü, Cumhur Gökhan
Ocakoğlu, Kasım
Zinnuroğlu, Murat
Keywords: Biopotential
Electrode
Graphene
Nanomaterial
Nerve conduction studies
Sensor
Surface electromyography
Charge transfer
Chemical vapor deposition
Chlorine compounds
Electrodes
Electrophysiology
Nanostructured materials
Scanning electron microscopy
Silver halides
Ag/AgCl electrodes
Biopotentials
Conductive gels
Dry electrode
Electrode performance
High impedance
Motor-nerve conduction
Nerve conduction study
Silver-silver chloride
Surface electromyography
Graphene
Publisher: Elsevier Ltd
Abstract: Conventional silver-silver chloride (Ag/AgCl) electrodes are widely used for recording surface electromyography (sEMG) with a conductive gel. However, for long-term sEMG recording, the gel has some disadvantages that cause high impedance. Therefore, the dry electrodes have been alternatively purposed to overcome these disadvantages. Recently, the nanomaterial-based dry electrodes have been developed for long term electrophysiological signal recording. In the present study, we aimed to develop a graphene-coated Ag/AgCl electrode for long-term recording. We transferred single layer graphene (SLG) on the Ag/AgCl electrode surface by using chemical vapor deposition and confirmed this process by Raman scattering spectroscopy and scanning electron microscopy. We then compared the graphene-coated Ag/AgCl and conventional Ag/AgCl electrodes by evaluating median motor nerve conduction studies (mNCS) and their impedance. The charge transfer resistance (Rct) for the Ag/AgCl electrode (4170 ?) was much higher than graphene-coated Ag/AgCl electrode (Rct = 24.6 ?). For median mNCS measurements without gel, the graphene-coated Ag/AgCl electrode provided a better amplitude of distal and proximal compound muscle action potential (28.3 mV and 25.8 mV, respectively) than the Ag/AgCl electrode (21.8 mV and 20.9 mV, respectively). Consequently, the present study suggests promising results in terms of the usability of graphene-coated Ag/AgCl electrodes for long-term monitoring and wearable systems applications of sEMG. In future studies, we aim to investigate clinical applicability of graphene-coated sEMG electrodes that include extended clinical settings and larger study population. © 2022 The Author(s)
URI: https://doi.org/10.1016/j.biosx.2022.100193
https://hdl.handle.net/11499/47415
ISSN: 2590-1370
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Teknoloji Fakültesi Koleksiyonu

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