2. Invisibility cloak
2.1 Principle
In the case of the invisibility cloak, the space transformation concerned a cylindrical space of radius b, which was transformed into an annular space between radii a and b (figure 4 ). Points in the initial space are marked with the coordinates r, q and z. Those in the transformed space are marked by r′, q′ and z′ in cylindrical coordinates. Both spaces are assumed to be infinite in the z and z′ directions, which are merged.
The transformation is therefore defined by a set of relatively simple equations (12) :...
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Invisibility cloak
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