Flexible enzyme free glucose micro-sensor for continuous monitoring applications

Flexible enzyme free glucose micro-sensor with nanoporous Pt (platinum) working electrode on a bio-compatible PET (polyethylene terephthalate) film was designed, fabricated, and characterized for continuous monitoring applications. The fabricated flexible sensor showed electrode surface RF (roughness factor) of 106.5 which was much higher than that of the sensor with sputtered Au electrode. The fabricated sensor exhibited high sensitivity of 20.16 muA/mMmiddotcm² with correlation coefficient of 0.958 without affecting inferring species in glucose concentrations ranged from 5 to 30 mM. It also exhibited low detection limit of 25 muM, and highly stable recovery characteristic. Flexibility, bio-compatibility, and enzyme free characteristic of the fabricated sensor are strong advantages for continuous glucose monitoring applications.