Superflexible and Lead-Free Piezoelectric Nanogenerator as a Highly Sensitive Self-Powered Sensor for Human Motion Monitoring.

ABSTRACT: For traditional piezoelectric sensors based on poled ceramics, a low curie temperature (T_c) is a fatal flaw due to the depolarization phenomenon. However, in this study, we find the low T_c would be a benefit for flexible piezoelectric sensors because small alterations of force trigger large changes in polarization. BaTi_0.88Sn_0.12O₃ (BTS) with high piezoelectric coefficient and low T_c close to human body temperature is taken as an example for materials of this kind. Continuous piezoelectric BTS films were deposited on the flexible glass fiber fabrics (GFF), self-powered sensors based on the ultra-thin, superflexible, and polarization-free BTS-GFF/PVDF composite piezoelectric films are used for human motion sensing. In the low

SUBMITTER: Yu D 

PROVIDER: S-EPMC8093345 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature