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

作　　者：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 

机构地区：[1]Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM),Nanjing Tech University(Nanjing Tech),Nanjing 211800,China [2]Department of Neurosurgery,The First Affiliated Hospital of Nanjing Medical University,Nanjing 210029,China [3]The Institute of Flexible Electronics(IFE,Future Technologies),Xiamen University,Xiamen 361005 Fujian,China

出　　处：《npj Flexible Electronics》2023年第1期20-31,共12页npj-柔性电子（英文）

基　　金：supported by the National Key R&D Program of China(2020YFA0709900,2021YFB3200302);the National Natural Science Foundation of China(62288102,22075139,22077101);Fundamental Research Funds for the Central Universities.

摘　　要：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 costeffectiveness,which is expected to deeply integrate sweat monitoring into physical activity,providing an important tool for intelligent health.

关 键 词：SCREEN WEAR PRINTING 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]