Self-powered sound detection and recognition sensors based on flexible polyvinylidene fluoride-trifluoroethylene films enhanced by in-situ polarization

Zhen Guo, Shuai Liu, Xiaoran Hu*, Qian Zhang, Fei Shang, Shipai Song, Yong Xiang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

16 引用 (Scopus)

摘要

A flexible, accurate and highly sensitive sound detection and recognition sensor was fabricated in this study; this was achieved by employing a polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) film and in-situ polarization. The PVDF-TrFE film was polarized using our polarization system within 5 min without heating; further, this system has the advantages of high production efficiency, excellent piezoelectric performances, and good uniformity compared to traditional poling approaches. The sound detection and recognition sensor responded to various types of sound waves in a wide range of frequencies with an error of less than 1% by producing corresponding voltage signal; these can be used to accurately identify complex sound signals with different frequencies and different intensities. Furthermore, the sensor was flexible and self-powered. All the above features render it hold great potential in various applications, such as microphones, biometrics, environmental protection and artificial intelligence.

源语言英语
文章编号111970
期刊Sensors and Actuators A: Physical
306
DOI
出版状态已出版 - 1 5月 2020
已对外发布

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Guo, Z., Liu, S., Hu, X., Zhang, Q., Shang, F., Song, S., & Xiang, Y. (2020). Self-powered sound detection and recognition sensors based on flexible polyvinylidene fluoride-trifluoroethylene films enhanced by in-situ polarization. Sensors and Actuators A: Physical, 306, 文章 111970. https://doi.org/10.1016/j.sna.2020.111970