文章基本信息

标题：Electret Nanogenerators for Self-Powered, Flexible Electronic Pianos
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作者：Yongjun Xiao ; Chao Guo ; Qingdong Zeng 等
期刊名称：Sustainability
印刷版ISSN：2071-1050
出版年度：2021
卷号：13
期号：8
页码：4142
DOI：10.3390/su13084142
语种：English
出版社：MDPI, Open Access Journal
摘要：Traditional electronic pianos mostly adopt a gantry type and a large number of rigid keys, and most keyboard sensors of the electronic piano require additional power supply during playing, which poses certain challenges for portable electronic products. Here, we demonstrated a fluorinated ethylene propylene (FEP)-based electret nanogenerator (ENG), and the output electrical performances of the ENG under different external pressures and frequencies were systematically characterized. At a fixed frequency of 4 Hz and force of 4 N with a matched load resistance of 200 MΩ, an output power density of 20.6 mW/cm<sup>2</sup> could be achieved. Though the implementation of a signal processing circuit, ENG-based, self-powered pressure sensors have been demonstrated for self-powered, flexible electronic pianos. This work provides a new strategy for electret nanogenerators for self-powered sensor networks and portable electronics.
关键词：electret; nanogenerator; self-powered; flexible; electronic piano