Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt.
Faculty of Science, Utah State University, Logan, UT 84341, USA.
Sensors (Basel). 2020 May 31;20(11):3111. doi: 10.3390/s20113111.
This paper introduces a new usage of piezoelectric poly (vinylidene fluoride) (PVDF) electrospun nanofiber (NF) membrane as a sensing unit for acoustic signals. In this work, an NF mat has been used as a transducer to convert acoustic signals into electric voltage outcomes. The detected voltage has been analyzed as a function of both frequency and amplitude of the excitation acoustic signal. Additionally, the detected AC signal can be retraced as a function of both frequency and amplitude with some wave distortion at relatively higher amplitudes and within a certain acoustic spectrum region. Meanwhile, the NFs have been characterized through piezoelectric responses, beta sheet calculations and surface morphology. This work is promising as a low-cost and innovative solution to harvest acoustic signals coming from wide resources of sound and noise.
本文介绍了一种将压电聚偏二氟乙烯（PVDF）电纺纳米纤维（NF）膜用作声信号传感单元的新用途。在这项工作中，NF 毡已被用作换能器，将声信号转换为电压输出。所检测到的电压已作为激励声信号的频率和幅度的函数进行了分析。此外，所检测到的交流信号可以作为频率和幅度的函数进行追溯，在相对较高的幅度和一定的声谱区域内会有一些波形失真。同时，通过压电响应、β 片层计算和表面形貌对 NF 进行了表征。这项工作有望成为一种低成本、创新的解决方案，用于采集来自各种声源和噪声的声信号。
