Non-Invasive Glucose Measurement Using Electric Field and Temperature Sensor

초록

A novel sensor system is presented for the non-invasive measurement of blood glucose concentration by applying anelectric field to the skin. Unlike conventional invasive methods, the proposed sensor estimates glucose levels indirectly by analyzingtemperature variations caused by dielectric loss, which arises from interactions between the electric field and glucose molecules. Experimental results across a glucose concentration range of 50–400 mg/dL demonstrated optimal performance, with the highest linearityand sensitivity achieved at 50 kHz and 24 V. Additionally, as the glucose concentration increased, the sensor output graduallydecreased, exhibiting a strong linear relationship between the glucose level and the thermal response. In experiments simulating physiologicalconditions with the addition of 0.9% NaCl, the decreasing trend was more pronounced, confirming the sensor’s high responsivenessand reliability in electrolyte environments. The proposed sensor system has the potential to overcome the limitations ofinvasive techniques and improve the quality of life for patients with diabetes mellitus.

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