Planar metamaterial analogue of electromagnetically induced transparency for a miniature refractive index sensor

Publication date: Available online 9 September 2019Source: Physics Letters AAuthor(s): Rong Li, Xiang-kun Kong, Shao-bin Liu, Zhi-ming Liu, Yu-meng LiAbstractA planar metamaterial of analogue of Electromagnetically Induced Transparency (EIT-like) is theoretically and experimentally investigated. The EIT-like metamaterial unit cell, whose electrical size is only 0.2λ0, consists of a split ring resonator (SRR) and a folded-line pair resonator (FLPR). For the TM wave incidence, a sharp transmitted peak with high quality factor can be observed. The EIT-like metamaterial is fabricated and measured. Good agreement is obtained between the simulation and measurement results. A miniature refractive index sensor based on the proposed metamaterial is simulated and exhibits high sensitivity and Figure of Merit (FOM).

Source: Physics Letters A - September 10, 2019 Category: Physics Source Type: research