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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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Investigation of graphene-coated.pdf | 2.98 MB | Adobe PDF | View/Open |
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