Tunable THz metamaterials based on an array of paraelectricSrTiO.sub.3./sub. rods

0364241 - FZÚ 2012 RIV DE eng J - Journal Article
Yahiaoui, R. - Němec, Hynek - Kužel, Petr - Kadlec, Filip - Kadlec, Christelle - Mounaix, P.
Tunable THz metamaterials based on an array of paraelectricSrTiO₃ rods.
Applied Physics A - Materials Science & Processing. Roč. 103, č. 3 (2011), s. 689-692. ISSN 0947-8396. E-ISSN 1432-0630
R&D Projects: GA AV ČR(CZ) IAA100100907; GA MŠMT LC512
Institutional research plan: CEZ:AV0Z10100520
Keywords : time-domain terahertz spectroscopy * metamaterials * SrTiO₃
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.630, year: 2011

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.
Permanent Link: http://hdl.handle.net/11104/0006545