驻极体
摩擦电效应
材料科学
能量收集
数码产品
机械能
微电子机械系统
纳米技术
储能
功率(物理)
电气工程
复合材料
工程类
物理
量子力学
作者
Jianxiong Zhu,Yaxin Yang,Hui Zhang,Zijing Zhao,Tao Hu,Lei Liu
标识
DOI:10.1002/adfm.202214859
摘要
Abstract Electrets are normally applied for energy conversion from mechanical vibration sources in the environment to electrical power without any friction, which induces electric device sustainability and mechanically robust. It functions for electron storage and electrostatic/triboelectric effect, whose electrical/mechanical performance dramatically benefits energy harvesters, self‐powered sensors, and even intelligent/sustainable systems. To summarize the progress of electret‐based electronics, this review proposes three key issues around enhanced energy harvesting toward sensors and sustainable systems. First, with the properties of long‐term charge storage characteristics and the contactless mechanism for energy harvesting, the enhancement effect in electret from MEMS devices, porous microstructure devices, and multilayer electret devices are carefully assessed with the output power from various devices. Second, the multi‐functional applications aspect along with the triboelectric coupling effect and artificial piezoelectric materials are discussed as future electret devices, for example, polydimethylsiloxane materials. Third, more than energy harvesting, machine learning‐enabled methodology in electret electronics can be more reliable and sustainable, dramatically contributing to the living standard of the society. Electret technologies on the future development trends are finally analyzed and strengthened toward multifunctional, sustainable, and intelligent systems along with the upcoming technologies in coupling mechanism, artificial composite materials, and machine learning in data fusion.
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