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More services...Virtual Homogeneous Isotropic and Real Unhomogeneous Anisotropic Metamaterials
Akalin, T.
IEMN (Institut d’Electronique de Microélectronique et de Nanotechnologie), CNRS UMR 8520, Dpt DHS, USTL (Université des Sciences et Technologies de Lille)
Characteristics on metamaterials and potential applications are presented with the FEMLAB® software simulations results.
By definition, metamaterials are materials which exhibit properties which do not exist naturally. Another point is that metamaterials are associated with the negative refractive index property.
In the first part, negative refraction will be defined and illustrated by simulations performed with FEMLAB. I will then present some results concerning the perfect lens in an ideal case where the slab has simultaneously .
We will also present an original structure with an antenna and a metamaterial superstrate for simple directivity enhancement [4]. This is the case with materials which exhibit a negative refractive index very close to zero. Applications on highly directive antenna are then possible.
The directivity of the antenna comes from the Snell-Descartes’s law exploitation. Some simulations performed with FEMLAB will unambiguously show this property.
In the last part we will discuss the anisotropy of real metamaterials which are also strongly unhomogeneous.
