Abstract: A degradable cellulose nanocrystal-based conductive ink and a preparation method thereof are provided. The preparation method includes: S1, dissolving a cellulose nanocrystal in deionized water to form a mixed solution, and adding a water-resistant modifier into the mixed solution, and subjecting a resulting mixture to ultrasonic full dispersion to obtain a dispersion for later use; S2, dissolving a graphene nanopowder, methyl orange, polyvinyl pyrrolidone (PVP), and pyrrole in deionized water to obtain a suspension for later use; S3, adding an acidified ferric chloride solution and the dispersion dropwise into the suspension, subjecting a resulting mixture to a full reaction, subjecting a resulting hot reaction solution to suction filtration, and drying, and o grinding fully a resulting dried mixture to obtain a conductive filler; and S4, mixing the conductive filler, terpineol, glycerol, and PVA fully to obtain the degradable cellulose nanocrystal-based conductive ink.

Abstract: A method of fabricating metasurface on skin for blood glucose detection, which relates to a flexible wearable electronic technology in healthcare. The blood glucose detection comprises: designing metasurface with a resonant ring structure cell, and building a model by simulating a relationship between blood glucose concentration and electromagnetic absorption property of the metasurface; preparing the metasurface on the skin; scanning the metasurface on the skin under different frequencies electromagnetic wave and acquiring a relationship curve between S-11 parameter and frequency; the change of blood glucose concentration is determined according to the resonant peak frequency shift in the relationship curve based on the model.

Abstract: A method of fabricating metasurface on skin for blood glucose detection, which relates to a flexible wearable electronic technology in healthcare. The blood glucose detectioncomprises: designing metasurface with a resonant ring structure cell, and building a model by simulating a relationship between blood glucose concentration and electromagnetic absorption property of the metasurface; preparing the metasurface on the skin; scanning the metasurface on the skin under different frequencies electromagnetic wave and acquiring a relationship curve between S-11 parameter and frequency; the change of blood glucose concentration is determined according to the resonant peak frequency shift in the relationship curve based on the model.