Large-scale fully printed “Lego Bricks” type wearable sweat sensor for physical activity monitoring

IF 12.3 1区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC npj Flexible Electronics Pub Date : 2023-12-20 DOI:10.1038/s41528-023-00285-w
Wenhui Ji, Huanzhuan Liu, Yadong Liu, Wei Zhang, Tong Zhou, Xinxin Liu, Chao Tao, Jiangxuan Dai, Baoli Zha, Ruijie Xie, Jiansheng Wu, Qiong Wu, Weina Zhang, Lin Li, Fengwei Huo
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Abstract

Wearable sweat sensors are becoming increasingly popular for their robust capabilities in non-invasive, dynamic, and continuous real-time monitoring of biological information. Real-time monitoring of large-scale samples is crucial for realizing intelligent health. A major bottleneck for enabling large-scale sweat elucidation is the fabrication of wearable sensors equipped with microfluidic devices and flexible electrodes in a cost-effective, homogeneous performance and rapid large-scale way. Herein, a “Screen+Wax”-printing technique was introduced to prepare these components and construct “Lego Bricks” type wearable sweat sensor sensor to monitor sweat Na+ and K+. Flexible electrode arrays and paper-based microfluidic layers (they act as building blocks) were fabricated on polyethylene terephthalate and paper surfaces, respectively, using screen printing and wax printing. Gold nanoparticles and Na+/K+ ion-selective membranes were modified on the electrode surfaces by electrodeposition and drop coating, respectively. In this work, we highlight the excellent performance of the “Lego Bricks” type wearable sweat sensor in testing the Na+ and K+ imbalance of sweat from different body regions during exercise and, more significantly, to track the physical activity during prolonged exercise under different interventions. Furthermore, the prepared “Lego Bricks” wearable sweat ion electrochemical sensor is demonstrated to be capable of large-scale samples elucidation with outstanding performance and cost-effectiveness, which is expected to deeply integrate sweat monitoring into physical activity, providing an important tool for intelligent health.

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大规模全打印 "乐高积木 "式可穿戴汗液传感器,用于体力活动监测
可穿戴汗液传感器因其在无创、动态和连续实时监测生物信息方面的强大功能而越来越受欢迎。对大规模样本进行实时监测对于实现智能健康至关重要。实现大规模汗液阐释的一个主要瓶颈是如何以低成本、均质性能和快速大规模的方式制造配备微流控器件和柔性电极的可穿戴传感器。本文介绍了一种 "丝网+蜡 "印刷技术来制备这些元件,并构建 "乐高积木 "式可穿戴汗液传感器来监测汗液中的Na+和K+。利用丝网印刷和蜡印刷技术,分别在聚对苯二甲酸乙二醇酯和纸张表面制备了柔性电极阵列和纸基微流控层(它们充当积木)。金纳米粒子和 Na+/K+ 离子选择膜分别通过电沉积和滴涂的方法修饰在电极表面。在这项工作中,我们强调了 "乐高砖块 "式可穿戴汗液传感器在测试运动过程中不同身体区域汗液的 Na+ 和 K+ 失衡方面的优异性能,更重要的是,它还能在不同干预措施下跟踪长时间运动过程中的体力活动。此外,制备的 "乐高砖块 "式可穿戴汗液离子电化学传感器性能卓越、成本低廉,能够进行大规模样品阐释,有望将汗液监测深度融入体育锻炼,为智能健康提供重要工具。
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来源期刊
CiteScore
17.10
自引率
4.80%
发文量
91
审稿时长
6 weeks
期刊介绍: npj Flexible Electronics is an online-only and open access journal, which publishes high-quality papers related to flexible electronic systems, including plastic electronics and emerging materials, new device design and fabrication technologies, and applications.
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