Labyrinth Metasurface-based Devices for High-sensitivity Thin Film Sensing

In this work, two labyrinth metasurfaces with inductive and capacitive behavior operating in the range of the Terahertz (THz) are presented. The high concentration of electric field in these structures led to excellent results for the use of the devices as thin-film sensors. Numerical and experimental studies have been carried out, with excellent sensitivity and Figure of Merit (FOM) results enhancing dramatically those found in the literature. Due to its great behavior, the use of these thin-film sensors could be extended to perform biological sensing in the future.