Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3026532
Keywords
finite element analysis; light polarisation; light reflection; metamaterials; permeability; permittivity
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Funding
- National Science Foundation of China [60871016, 60671015, 60601002, 60621002]
- Natural Science Foundation of Jiangsu Province [BK2008031]
- National Basic Research Program (973) of China [2004CB719802]
- 111 Project [111-2-05]
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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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