TiO2 microsphere-based metamaterials exhibiting effective magnetic response in the terahertz regime
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Thin layers of all-dielectric metamaterials based on TiO2 spherical particle resonators are investigated. A new method based on spray drying of dissolved nanoparticles is used in the fabrication process. Spectral footprints of electric and magnetic dipoles are reported numerically and through experimental tests. It is a promising step for the construction of novel three-dimensional isotropic metamaterials exhibiting desired electromagnetic properties for terahertz applications.
KeywordsTiO2 Dielectric Permittivity Terahertz Time Domain Spectroscopy Effective Dielectric Permittivity Effective Magnetic Permeability
The work at the University of Bordeaux 1 was supported by the project ‘GIS-AMA-SAMM’. Financial support by the Czech Science Foundation (Project No. P204/12/0232) is also acknowledged.
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