纤维结构汗液传感器连续化分段制备及其应用

Wearable sensing technologies are essential for achieving personalized medicine by continuously monitoring the health status of the human body. Among them, fiber-structured sweat sensors can provide continuous non-invasive diagnostic support for the human body by sampling human sweat rich in physiological information and detecting the concentration of characteristic substances in the sweat, but their continuous preparation still faces many technical bottlenecks. Therefore, this paper proposes a continuous processing technology for the segmental deposition of multiple functional materials on a single fiber to realize the continuous preparation of fiber-structured sweat sensors. First, a continuous chemical plating process was designed, and a polymer-assisted rapid metal deposition process enhancement method was introduced to realize the continuous preparation of copper-coated fibers. Secondly, continuous segmented electroplating, electro-assisted deposition and thermal coating processes were designed respectively to deposit manganese metal, zinc oxide and urethane sequentially in segments on long fibers, so as to process multiple sensor device units on a single fiber in a continuous segmented manner. Finally, a sweat sensing fabric for real-time monitoring of urea concentration was constructed by using the shuttle process, which had a good linear response in the range of 10 ~ 50 mM urea concentration. This study provides important technical support for the continuous preparation of fiber-structured electronic devices and shows great potential for application in the field of medical and health monitoring.