Abstract
A pair of resonators are used to realize multiple electromagnetically induced transparency-like (EIT-like) transmission peaks operating in the microwave band, with the bright and dark modes being symmetric double-ellipsoids and spoof localized surface plasmons. The simulation and test results reveal that the EIT-like metamaterial may generate three transparent EIT-like transmission peaks in the 9~12 GHz frequency range. Following that, we propose a plasmonically induced transparency refractive index sensor that operates in the IR range. The group delay in this sensor has broad applicability in diverse surface sensing based on EIT-like metamaterials.
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