材料科学
压电
聚二甲基硅氧烷
纳米复合材料
碳纳米管
灵敏度(控制系统)
可穿戴计算机
灵活性(工程)
声学
纳米发生器
可穿戴技术
复合数
压电传感器
纳米技术
计算机科学
电子工程
复合材料
工程类
嵌入式系统
统计
物理
数学
作者
Ragu Sasikumar,Sumin Cho,Arbaz Waqar,Asif Ishfaque,Dongwhi Choi,Byungki Kim
标识
DOI:10.1016/j.cej.2023.147297
摘要
Piezoelectric materials are suitable for use in wearable devices because of their simplicity and self-powering characteristics. However, before they can be used as wearable sensors, their flexibility and sensitivity need to be enhanced. Therefore, investing time and effort for improving piezoelectric materials is essential. In this study, we fabricated flexible piezoelectric nanogenerators (FPENGs) with microcracks based on a functionalized multi-walled carbon nanotubes/BaTiO3@polydimethylsiloxane composite. Then, we performed morphological and structural analyses of the fabricated composite. It was found that the presence of microcracks improved the output performance of the FPENG. The fabricated FPENG could function as an acoustic sensor with significantly enhanced frequency range sensitivity. As a proof-of-concept application, the ability of the FPENG to differentiate the loudness and melody of sound music, as well as its audio-to-text conversion capability, was demonstrated. These results validated the potential of the FPENG for a broader range of wireless communication applications on the Internet of Things.
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