Abstract

It is shown that artificial magnetism with relatively large frequency bandwidth can beobtained from periodic arrangements of dielectric rings. Combined with dielectric rods,dielectric rings can provide 3D isotropic left-handed metamaterials which are anadvantageous alternative to metallic split ring resonators (SRRs) and/or metallicwires when undetectability by low frequency external magnetic fields is desired.Furthermore it is shown that, unlike conventional SRRs, dielectric rings can also becombined with natural plasma-like media to obtain a left-handed metamaterial.

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