Tang Li, Wu Shaoji, Qu Jie, Gong Liang, Tang Jianxin
Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
Materials (Basel). 2020 Sep 7;13(18):3947. doi: 10.3390/ma13183947.
Hydrogels, as classic soft materials, are important materials for tissue engineering and biosensing with unique properties, such as good biocompatibility, high stretchability, strong adhesion, excellent self-healing, and self-recovery. Conductive hydrogels possess the additional property of conductivity, which endows them with advanced applications in actuating devices, biomedicine, and sensing. In this review, we provide an overview of the recent development of conductive hydrogels in the field of strain sensors, with particular focus on the types of conductive fillers, including ionic conductors, conducting nanomaterials, and conductive polymers. The synthetic methods of such conductive hydrogel materials and their physical and chemical properties are highlighted. At last, challenges and future perspectives of conductive hydrogels applied in flexible strain sensors are discussed.
水凝胶作为经典的软材料，是组织工程和生物传感领域的重要材料，具有良好的生物相容性、高拉伸性、强粘附性、出色的自愈性和自我恢复能力等独特性能。导电水凝胶还具有导电性这一额外特性，使其在驱动装置、生物医学和传感等领域有先进的应用。在本综述中，我们概述了导电水凝胶在应变传感器领域的最新进展，特别关注导电填料的类型，包括离子导体、导电纳米材料和导电聚合物。重点介绍了此类导电水凝胶材料的合成方法及其物理和化学性质。最后，讨论了导电水凝胶应用于柔性应变传感器面临的挑战和未来前景。
