Hierarchically structured PVDF/ZnO core-shell nanofibers for self-powered physiological monitoring electronics
Hierarchically structured PVDF/ZnO core-shell nanofibers for self-powered physiological monitoring electronics
复制标题
用于自供电生理监测电子器件的分层结构PVDF/ZnO核壳纳米纤维
DOI：
10.1016/j.nanoen.2020.104706
复制
发表时间：
2020-06-01
期刊：
影响因子：
17.6
通讯作者：
Yang, Weiqing
中科院分区：
文献类型：
--
作者：
Yang, Tao;Pan, Hong;Yang, Weiqing
Piezoelectric-based wearable electronics promise potential applications in human physiological monitoring for disease prediction, diagnose and rehabilitation. Still, it is a big challenge to fulfill excellent compatibility and precisely monitoring of the complexly subtle physiological signals simultaneously. Here, we prepared a three-dimensional hierarchically interlocked PVDF/ZnO nanofiber-based piezoelectric sensor through epitaxial growing ZnO nano rods (NRs) on the surface of electrospun PVDF nanofibers, which enables the fiber-based physiological monitoring electronics (PME) of well flexibility and high gas permeability. Due to synergistic piezoelectric effect of the effectively deformed interlocked ZnO NRs and the uniformly orientated PVDF nanofibers with high electroactive phase, the sensitivities of PME in both pressing and bending modes have been greatly improved 6 times and 41 times than that of pure PVDF nanofibers respectively. On this basis, the designed PME can precisely detect the complexly subtle physiological signals of respiration, wrist pulse and muscle behavior. Moreover, a sensitive gait recognition system was successfully developed based on PME arrays. Therefore, this proposed fiber-based device provides an alternative strategy to monitor the human subtle physiological signals and demonstrates promising potential in the expanded application of healthcare and clinical diagnosis.
