Characterization of high permittivity and low losses TiO2 sintered material for THz applications

In this work we demonstrate the fabrication and characterization of TiO2 ceramics material with high refractive index and low losses in the 300- 1400 GHz range. The optimized fabrication process, based on Spark Plasma Sintering, allows for the elaboration of high-density materials whose dielectric properties make them good candidates for the design of fully dielectric metamaterials.