Fully Textile, PEDOT:PSS Based Electrodes for Wearable ECG Monitoring Systems
Fully Textile, PEDOT:PSS Based Electrodes for Wearable ECG Monitoring Systems
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DOI：
10.1109/tbme.2015.2465936
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发表时间：
2016-03-01
影响因子：
4.6
通讯作者：
Bonfiglio, Annalisa
中科院分区：
文献类型：
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作者：
Pani, Danilo;Dessi, Alessia;Bonfiglio, Annalisa
目标：为了评估一种新型的纺织电极的基础上编织织物处理PEDOT：PSS，通过一个简单的制造过程，测试这些电极的生物电位记录。方法：制造是基于使用第二掺杂剂在PEDOT：PSS中浸泡的原始织物、挤压和退火。已在人类志愿者身上测试了电极的皮肤接触阻抗和静息和体力活动期间记录的ECG信号质量（功率谱密度、基线漂移、QRS可检测性和宽带噪声）。结果：电极能够在潮湿和干燥条件下工作。干电极更容易产生噪声伪影，特别是在体育锻炼期间，主要是由于电极与皮肤之间的接触不稳定。湿（盐水）电极呈现稳定且可再现的行为，其与传统的一次性凝胶Ag/AgCl电极相当或更好。结论：所获得的结果揭示了这种电极在没有电解质的情况下工作的能力，由于PEDOT：PSS的混合电子和离子导电性，提供了与皮肤的有价值的界面。这些电极可以有效地用于采集ECG信号。重要性：基于PEDOT：PSS的织物电极代表了可穿戴监测领域的一个重要里程碑，因为它们提供了一种简单且可重复的制造工艺，在潮湿和干燥（静止）条件下具有非常好的性能，并且相对于迄今为止提出的织物电极具有上级舒适度。这为它们集成到智能服装中铺平了道路。
Goal: To evaluate a novel kind of textile electrodes based on woven fabrics treated with PEDOT:PSS, through an easy fabrication process, testing these electrodes for biopotential recordings. Methods: Fabrication is based on raw fabric soaking in PEDOT: PSS using a second dopant, squeezing and annealing. The electrodes have been tested on human volunteers, in terms of both skin contact impedance and quality of the ECG signals recorded at rest and during physical activity (power spectral density, baseline wandering, QRS detectability, and broadband noise). Results: The electrodes are able to operate in both wet and dry conditions. Dry electrodes are more prone to noise artifacts, especially during physical exercise and mainly due to the unstable contact between the electrode and the skin. Wet (saline) electrodes present a stable and reproducible behavior, which is comparable or better than that of traditional disposable gelled Ag/AgCl electrodes. Conclusion: The achieved results reveal the capability of this kind of electrodes to work without the electrolyte, providing a valuable interface with the skin, due to mixed electronic and ionic conductivity of PEDOT:PSS. These electrodes can be effectively used for acquiring ECG signals. Significance: Textile electrodes based on PEDOT:PSS represent an important milestone in wearable monitoring, as they present an easy and reproducible fabrication process, very good performance in wet and dry (at rest) conditions and a superior level of comfort with respect to textile electrodes proposed so far. This paves the way to their integration into smart garments.