Volume 8, Issue 3 1901242
Full Paper

Flexible Piezoelectric Nanofibers/Polydimethylsiloxane-Based Pressure Sensor for Self-Powered Human Motion Monitoring

Xiaojuan Hou

Xiaojuan Hou

Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, 030051 China

Search for more papers by this author
Shengnan Zhang

Shengnan Zhang

Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, 030051 China

Search for more papers by this author
Junbin Yu

Junbin Yu

Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, 030051 China

Search for more papers by this author
Min Cui

Min Cui

Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, 030051 China

Search for more papers by this author
Jian He

Jian He

Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, 030051 China

Search for more papers by this author
Li Li

Li Li

Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, 030051 China

Search for more papers by this author
Xiangdong Wang

Corresponding Author

Xiangdong Wang

Sports Science Research Institute of the State Sports General Administration, Beijing, 100000 China

Search for more papers by this author
Xiujian Chou

Corresponding Author

Xiujian Chou

Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, 030051 China

Search for more papers by this author
First published: 13 January 2020
Citations: 57

Abstract

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.

Conflict of Interest

The authors declare no conflict of interest.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.