Research progress in application of chitosan conductive hydrogels for functional flexible strain sensors

Chitosan hydrogel with excellent degradability and biocompatibility has become an important material for constructing flexible strain sensors. Flexible strain sensors based on chitosan conductive hydrogels have superb environmental adaptability and are widely used in biomedical fields such as health monitoring and implantable devices. The preparation method and conductive mechanism of chitosan-based conductive hydrogels were reviewed. The current status of chitosan-based conductive hydrogels in low temperature resistant,self-repairing,and self-adhesive functional flexible strain sensors was summarized. Finally,it is pointed out that the optimization of the preparation process,the application of new materials,and the use of artificial intelligence are the key research directions for the future of chitosan-based conductive hydrogels for flexible strain sensors,aiming to provide theoretical foundations and practical guidance for the further development of multifunctional applications of flexible strain sensors.