Design of capacitive pressure sensor for continuous glucose monitoring system

The article introduces an innovative capacitive pressure sensor for continuous glucose monitoring systems, featuring a sensitivity of 2.24 μF/kPa. The sensor design includes a minute droplet of mercury and a flat aluminum electrode, separated by a 1 μm thick layer of Barium Strontium Titanate. The sensor demonstrates remarkable total capacitance changes exceeding 6 μF. Additionally, the study explores various capacitive pressure sensor principles, materials for fabrication, and performance characteristics through simulation. The sensor's performance is evaluated under different design models, showcasing variations in capacitance, sensitivity, and diaphragm deflection. The research also delves into the application of the sensor in a glucose monitoring system, utilizing ZigBee wireless sensor networks and real-time monitoring techniques. Furthermore, the study compares the performance of the proposed sensor with existing devices, highlighting its superior sensitivity and linearity. The paper concludes with a comprehensive analysis of the sensor's advantages and potential future advancements in the field of continuous glucose monitoring.