Inkjet Printed Flexible Electronic Dry ECG Electrodes on Polyimide Substrates Using Silver Ink
Inkjet Printed Flexible Electronic Dry ECG Electrodes on Polyimide Substrates Using Silver Ink
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DOI：
10.1109/eit48999.2020.9208322
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发表时间：
2020-07
期刊：
影响因子：
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通讯作者：
Moriom R. Momota;B. Morshed
中科院分区：
文献类型：
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作者：
Moriom R. Momota;B. Morshed
灵活的电子可穿戴设备市场需求正在快速增长。在这项研究工作中，我们使用两种形状的纳米银墨水在聚酰亚胺(50微米厚)上制备了喷墨打印(IJP)柔性电子干式心电电极。IJP电极在250°C下固化1h。我们将这些IJP电极与商用凝胶电极和金属电极的性能进行了比较。我们用这4种心电电极同时采集了9小时的实时心电数据。我们的IJP心电电极在信噪比、信噪比(例如，凝胶、金属、IJP圆形、IJP五边形分别为18.97、18.93、18.94、18.96分贝)和相干性指标方面表现出与商用凝胶和金属电极非常相似的性能。然而，随着凝胶电极随着时间的推移而退化，9小时后观察到数据退化，而来自干电极的数据从时间-频率图中明显地看出是相似的。金属电极受到较高的电力线噪声的影响。此外，与刚性金属电极相比，IJP圆形和五角形柔性电极具有更好的舒适性。因此，建议的IJP干式电极可作为心电可穿戴设备长期使用、可重复使用和舒适使用的可行选择。
Flexible electronic wearable device market demand is growing rapidly. In this research work, we have fabricated Inkjet Printed (IJP) flexible electronic dry ECG electrodes on polyimide substrates (50 µm thin) using silver nanoparticle ink in two shapes: circular and pentagonal. The IJP electrodes were cured at 250°C for 1 hour. We compared these IJP electrode performances against commercial gel and metal electrodes. We collected real-time ECG data using these 4 types of ECG electrodes simultaneously for 9 hours. Our IJP ECG electrodes showed very similar performances as the commercial gel and metal electrodes in terms of Signal-to-Noise Ratio, SNR (e.g. gel, metal, IJP circular, IJP pentagonal = 18.97, 18.93, 18.94, 18.96 dB, respectively) and coherence metrics. However, as the gel electrode degrades over time, after 9 hours the data was observed to be degrading while data from dry electrodes were similar as evident from the time-frequency graphs. Metal electrode suffered from higher utility line noises. Furthermore, IJP circular and pentagonal shaped flexible electrodes were superior for comfort due to being flexible compared to rigid metal electrode. Thus, the proposed IJP dry electrodes can be a viable option for long-time use, reusability, and comfort for usage in ECG wearables.