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Research Articles

Arbitrary polygonal cloaks with multiple invisible regions

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Pages 14-20 | Received 17 Sep 2010, Accepted 02 Nov 2010, Published online: 15 Dec 2010
 

Abstract

Arbitrary polygonal cloaks with multiple invisible regions are achieved by transformation optics. The original total space is divided into several layers. Choosing proper spatial mappings for these layers, a few empty layers in which objects can be hidden without bringing any scattering are available as extended invisible regions. Compared with the original polygonal cloaks the proposed one can provide multiple interior and/or exterior invisible regions simultaneously, and the objects can thus be hidden in the interior cavity and/or in the exterior space, or even be embedded into the gap between the cloaking shells.

Acknowledgements

This work was supported by the Hong Kong Innovation and Technology Fund (ITP/026/09NP).

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