Kim Minsoo P
Department of Chemical Engineering, Sunchon National University, Suncheon 57922, Republic of Korea.
Micromachines (Basel). 2023 Aug 20;14(8):1640. doi: 10.3390/mi14081640.
Multifunctional wearable devices detect electric signals responsive to various biological stimuli and monitor present body motions or conditions, necessitating flexible materials with high sensitivity and sustainable operation. Although various dielectric polymers have been utilized in self-powered wearable applications in response to multiple external stimuli, their intrinsic limitations hinder further device performance enhancement. Because triboelectric devices comprising dielectric polymers are based on triboelectrification and electrostatic induction, multilayer-stacking structures of dielectric polymers enable significant improvements in device performance owing to enhanced interfacial polarization through dissimilar permittivity and conductivity between each layer, resulting in self-powered high-performance wearable devices. Moreover, novel triboelectric polymers with unique chemical structures or nano-additives can control interfacial polarization, allowing wearable devices to respond to multiple external stimuli. This review summarizes the recent insights into multilayered functional triboelectric polymers, including their fundamental dielectric principles and diverse applications.
多功能可穿戴设备可检测对各种生物刺激作出响应的电信号，并监测当前的身体运动或状况，这就需要具有高灵敏度和可持续运行能力的柔性材料。尽管各种介电聚合物已被用于响应多种外部刺激的自供电可穿戴应用中，但其固有的局限性阻碍了器件性能的进一步提升。由于包含介电聚合物的摩擦电设备基于摩擦起电和静电感应，介电聚合物的多层堆叠结构由于各层之间不同的介电常数和电导率增强了界面极化，从而能够显著提高器件性能，进而产生自供电的高性能可穿戴设备。此外，具有独特化学结构或纳米添加剂的新型摩擦电聚合物可以控制界面极化，使可穿戴设备能够响应多种外部刺激。本文综述总结了对多层功能性摩擦电聚合物的最新见解，包括其基本介电原理和各种应用。
