聚二甲基硅氧烷
锆钛酸铅
压电
压力传感器
材料科学
电介质
声学
人体运动
纳米技术
线性
光电子学
生物医学工程
运动(物理)
电子工程
复合材料
计算机科学
机械工程
铁电性
工程类
人工智能
物理
作者
Xiaojuan Hou,Shengnan Zhang,Junbin Yu,Min Cui,Jian He,Li Li,Xiangdong Wang,Xiujian Chou
标识
DOI:10.1002/ente.201901242
摘要
Self‐powered wearable devices have attracted significantly increased attention in human motion monitoring. These flexible physical sensors conformally attach to the surface of the skin to provide new applications in human‐activity monitoring. Herein, a highly flexible and self‐powered piezoelectric pressure sensor for real‐time human motion detecting using a piezoelectric thin film with high filling ratio of lead zirconate titanate (PZT) nanofibers (NFs) in polydimethylsiloxane (PDMS) is reported. Due to the large dielectric constant of PZT and elastic properties of PDMS, the sensor performs in a wide linear region (1.25–250 kPa) with great linearity (pressure–voltage 0.9909) and good reproducibility over 2000 cycles. Using the sensor, various human body motions are detected, including joint bending, subtle/large wrist deformations, wrist and some common sporting movements. In addition, a sensor array is successfully developed to realize motion tracking, showing strong potential for application in personal recognition.
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