Negative refraction, negative phase velocity, and counterposition in bianisotropic materials and metamaterials
نویسندگان
چکیده
منابع مشابه
Negative refraction, negative phase velocity, and counterposition in bianisotropic metamaterials with chirality
The planewave response of bianisotropic materials generally cannot be characterized by a single scalar index, as directionality of energy flow and multiple wavevectors need to be considered. This is especially significant for bianisotropic metamaterials which support negative refraction, negative phase velocity, and counterposition. By means of a numerical example based on a commonly–studied bi...
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The planewave response of a linear passive material generally cannot be characterized by a single scalar refractive index, as directionality of energy flow and multiple wavevectors may need to be considered. This is especially significant for materials which support negative refraction, negative phase velocity, and counterposition. By means of a numerical example based on a commonly studied bia...
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The Lorentz transformations of electric and magnetic fields were implemented to study (i) the refraction of linearly polarized plane waves into a half–space occupied by a uniformly moving material, and (ii) the traversal of linearly polarized Gaussian beams through a uniformly moving slab. Motion was taken to occur tangentially to the interface(s) and in the plane of incidence. The moving mater...
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We present an experimental demonstration of phase conjugation using nonlinear metamaterial elements. Active split-ring resonators loaded with varactor diodes are demonstrated theoretically to act as phase-conjugating or time-reversing discrete elements when parametrically pumped and illuminated with appropriate frequencies. The metamaterial elements were fabricated and shown experimentally to p...
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We design 3D metallic nanowire media with different structures and numerically demonstrate they can be effective homogeneous indefinite anisotropic media by showing their dispersion relations are hyperbolic. A nice fitting procedure is exploited to obtain the dispersion relations, from which we retrieve the effective permittivities. The pseudo focusing for the real 3D wire medium agrees very we...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2009
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.79.235121