期刊
NANOMATERIALS
卷 6, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/nano6090156
关键词
graphene; electrocardiogram (ECG); long-term monitoring; dry electrodes; contact impedance; Raman spectroscopy
类别
资金
- Ministry of National Education of Turkey
- research group of Doclab in Brunel University London
- 2-DTech company in Manchester
The unique parameters of graphene (GN)-notably its considerable electron mobility, high surface area, and electrical conductivity-are bringing extensive attention into the wearable technologies. This work presents a novel graphene-based electrode for acquisition of electrocardiogram (ECG). The proposed electrode was fabricated by coating GN on top of a metallic layer of a Ag/AgCl electrode using a chemical vapour deposition (CVD) technique. To investigate the performance of the fabricated GN-based electrode, two types of electrodes were fabricated with different sizes to conduct the signal qualities and the skin-electrode contact impedance measurements. Performances of the GN-enabled electrodes were compared to the conventional Ag/AgCl electrodes in terms of ECG signal quality, skin-electrode contact impedance, signal-to-noise ratio (SNR), and response time. Experimental results showed the proposed GN-based electrodes produced better ECG signals, higher SNR (improved by 8%), and lower contact impedance (improved by 78%) values than conventional ECG electrodes.
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