Estudo Comparativo de Ressonadores Meta-Inspirados para Detecção de Cobre em Corpos de Água

In this study, the simulated response of sensors in water samples with concentrations of 0 mg/L, 8 mg/L, and 10 mg/L of pure metallic copper powder was observed. Based on the differences in resonance frequencies from the reflection coefficient curves, the sensitivity analysis of the sensors was performed. Three types of sensors were designed with PLA substrate and circular, square, and octagonal SRR shapes, with similar dimensions. The sensor with the circular shape stood out, exhibiting a 20 MHz variation when the concentration was changed by 10 mg/L.