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1 September 2009 All-dielectric metamaterial: a ferroelectric-based scheme in the microwave range
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Abstract
Dielectric metamaterials are an attractive alternative to metallic metamaterials in order to reduce losses. Mie resonances in dielectric resonators can give rise to a resonant effective permeability or permittivity at resonance frequencies. When resonances are sufficiently enhanced permeability or permittivity can become negative. In the microwave range 2D rodshaped or 3D cylinder-shaped resonators made of high-permittivity ferroelectric material can be used to demonstrate such phenomena. In the first part we present experimental proof for TE-modes in rod resonators in the X-band (8.20- 12.40GHz) using barium strontium titanate (Ba0.4Sr0.6TiO3, ε=575). In the second part we present experimental proof for modes in cylinder resonators in both the X and S-band (2.60-3.95GHz) using a commercial ceramic (ε=78). A negative index of refraction is shown in both cases.
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Thomas Lepetit, Eric Akmansoy, and Jean-Pierre Ganne "All-dielectric metamaterial: a ferroelectric-based scheme in the microwave range", Proc. SPIE 7392, Metamaterials: Fundamentals and Applications II, 73920H (1 September 2009); https://doi.org/10.1117/12.826185
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