A Wearable Triple-Spiral Sensor for in-Situ Real Time Sweat Analysis Based on Laser Induced Graphene

In this study, we present a triple-spiral sweat sensor (TSSS) for in-situ sweat uric acid analysis instantaneously by Laser Induced Graphene (LIG) process. Different from the traditional patch with microfluidic channel to gather sweat, this sensor could detect tiny sweat droplet(5µL) generated from skin in real time, as the three electrodes surround each other densely on the patch. More essentially, it could monitor a wide range of uric acid concentration (2.5μΜ~250μΜ) sensitively and accurately in epidermal sweat experiment, which is irrelevant to position of perspiration. In short, the flexible sensor with especial structure and simple process is of great significance to auxiliary diagnosis and personalized health management.