Abstract
Effect of g lucose addition on piezoelectric sensing of water solution has been investigated with different percentages (0, 0.05, 0.1 and 0.15) wt. %. Sensing signals (piezoelectric) characterized and achieved by using transducer which transmits a mechanical waves towards the glucose solution cell, and then the receptor received the attenuated signals. The range of operating frequencies was (10 kHz - 50M Hz), the results of measurement which included record ing the resonance frequencies (in the first order) for all prepared samples. The results showed that the resonance frequency shifted to the higher values (fro m 5M Hz to 35M Hz) fo r glucose concentrations (from 0 to 1 wt. %) of water solution. Also the damping coefficient decreased (fro m 1.19 to 1.02) for the same range of g lucose concentrations.
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