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Microwave sensor based on a complementary split ring resonator: (a) Layout of the CSRR sensor along with the pipette for liquid samples. (b) Measured and simulated transmission response for a bare sensor [82]. Reprinted from Khanna, Y. et al. Dual-Band Microwave Sensor for Investigation of Liquid Impurity Concentration Using a Metamaterial Complementary Split-Ring Resonator. Journal of Electronic Materials, 2019, with permission from Springer Nature.
