Invisible cloak with easily-realizable metamaterials
نویسندگان
چکیده
A new 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 invisible cloak is that none of the parameters is singular and the changing range of all parameters is relatively small, and hence the cloak is much easier to realize with the metamaterial techniques currently available.
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