Tunable THz metamaterials based on an array of paraelectric SrTiO3 rods

• DOI: 10.1007/s00339-011-6335-y
• Publication Date: 2011-02-15T21:12:43Z
• Authors: R. Yahiaoui; H. Němec; P. Kužel; F. Kadlec; C. Kadlec; P. Mounaix
• Keywords: 02 engineering and technology; 0210 nano-technology

This work presents theoretical and experimental investigations of a tunable metamaterial which exhibits negative permeability in the THz frequency range. The tunability is obtained by temperature changes, and the sample consists of an array of high-permittivity SrTiO3 (STO) rods micromachined by a femtosecond laser. Structures exhibiting a negative permeability on multiple frequency bands are also investigated and a proper choice of the dimensions of the pattern allows us to achieve a substantial broadening of the frequency band with negative μ.