基于导电水凝胶的柔性电子皮肤传感器研究

Progress of flexible electronic skin sensor based on conductive hydrogels

导电水凝胶因具有柔韧、可愈合和无毒性等与皮肤相似的特点被广泛应用于柔性可穿戴设备领域,在柔性电子皮肤传感器领域发展尤为迅速。国内外众多研究者们通过设计开发新型导电水凝胶制备高性能多功能的电子皮肤传感器,将应变、温度和动作等信息转变为电信号,实现对物理化学和生理信息的无创追踪和医疗诊断,在生物电子学领域有广泛的应用前景。本文根据导电水凝胶的导电机理分析了导电水凝胶类型,总结了导电水凝胶柔性电子皮肤的构型及其在可拉伸性、自愈合性和生物相容性方面的独特优势,梳理了导电水凝胶电子皮肤传感器研究进展,综述了导电水凝胶电子皮肤传感器在人体运动监测、医疗保健、人机交互等方面的重要应用,并对导电水凝胶电子皮肤未来发展动向提出展望。

Conductive hydrogels have been widely used for flexible wearable devices due to their skin-like characteristics such as flexibility,healing and non-toxicity.It has been developing very rapidly for flexible electronic skin sensors.Many researchers at home and abroad have designed and developed new conductive hydrogels to prepare high-performance multifunctional electronic skin sensors that convert information such as strain,temperature and body fluids into visible or electrical signals for non-invasive tracking of physicochemical and physiological information and even for medical diagnosis.As a result,it have wide application prospects in the field of bioelectronics.This review first classify the conductive hydrogels based on their conductive mechanisms.Then it summarizes the configuration of the flexible electronic skin.Its unique advantages for flexible electronic skin application is discussed,namely,stretchability,self-healing and biocompatibility.After that,the review compares the development progress of hydrogel-based electronic skin sensors.Finally,the review focuses on its important applications as a flexible wearable device in human motion monitoring,healthcare,human-computer interaction and virtual reality,and presents the future development trends of conductive hydrogel electronic skin.