Non-Invasive Glucose Concentration Measurement Using a Metamaterial Based Biosensor

The concentration of glucose in aqueous solution is measured using a glucose sensor based on metamaterial. A pair of complementary split ring resonators (CSRR) with a circular configuration is combined into the suggested sensor on a FR4 substrate. High concentrations of electric field that are accumulated in the CSRR cell structure interact with the aqueous glucose solution. When the dielectric properties of glucose solution are changed, the return loss of the sensor is changed accordingly. The concentration of glucose in aqueous solution is calculated from the amplitude shift. The dielectric characteristics of glucose solution at the working frequency are computed utilizing the Debye relaxation model. The sensor demonstrates an impressive level of precision falling within the range of medical acceptability. Additionally, it exhibits a noteworthy sensitivity of 0.52 dB/(mg/mL). In the field of non-invasive glucose level testing, the glucose sensor can bring up new possibilities.