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Metamaterials and the mathematical Science of invisibility

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Principle of cloaking : (left) A point source radiating in an homogeneous isotropic medium; (middle) A point source radiating in an homogeneous isotropic medium in the  presence of an infinite conducting F-shaped scatterer; (right) A point source radiating in  an homogeneous isotropic medium in the presence of an infinite conducting F-shaped  scatterer surrounded by an invisibility cloak (an anisotropic heterogeneous ring)

Principle of cloaking : (left) A point source radiating in an homogeneous isotropic
medium; (middle) A point source radiating in an homogeneous isotropic medium in the
presence of an infinite conducting F-shaped scatterer; (right) A point source radiating in
an homogeneous isotropic medium in the presence of an infinite conducting F-shaped
scatterer surrounded by an invisibility cloak (an anisotropic heterogeneous ring)

Andre Diatta, Sebastien Guenneau, Andre Nicolet, Frederic Zolla
A review of some recent developments in the field of photonics: cloaking, whereby an object becomes invisible to an observer, and mirages, whereby an object looks like another one (say, of a different shape). Such optical illusions are made possible thanks to the advent of metamaterials, which are new kinds of composites designed using the concept of transformational optics. Theoretical concepts introduced here are illustrated by finite element computations…..
Read more: http://arxiv.org/ftp/arxiv/papers/1212/1212.5408.pdf

Written by physicsgg

December 26, 2012 at 9:40 am

Posted in PHYSICS

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