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4. Design of Non-Singular 2-D-Layered Cloaks Mapped From Small Areas.

Author

Goncalves, Fabio J. F., Silva, Elson J., and Mesquita, Renato C.

Subjects
*MATHEMATICAL optimization, *SCATTERING (Mathematics), *CIRCULAR data, *CLOAKING devices, *COORDINATE transformations
Abstract

A singular coordinate transformation leads to extreme materials in a transformation-based cloak. If a non-singular transformation is used, the perfect invisibility is lost. The invisibility is also influenced by the homogenization process. In this paper, we investigate these two influences in 2-D circular cylindrical cloaks, obtained from different non-singular mappings. Considering a further deterministic optimization, we also conclude that it is better to use a non-singular cloak based on a mapping scale up to 20%, since it has lower scattering and simpler materials when compared with cloaks based on other mappings. [ABSTRACT FROM AUTHOR]

Published
2017
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