Invisibility cloak without singularity

Details Invisibility cloak without singularity Invisibility cloak without singularity

2008-09-13

arxiv.org/abs/0809.2317v2

Physics

Optics

to appear in Appl. Phys. Lett

Scientific paper

10.1063/1.3026532

An elliptical invisible cloak is proposed using a coordinate transformation in the elliptical-cylindrical coordinate system, which crushes the cloaked object to a line segment instead of a point. The elliptical cloak is reduced to a nearly-circular cloak if the elliptical focus becomes very small. The advantage of the proposed invisibility cloak is that none of the parameters is singular and the changing range of all parameters is relatively small.

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