Non-Magnetic Cloak without Reflection
Optics
2007-07-26 v1
Abstract
In an electromagnetic cloak based on a transformation approach, reduced sets of material properties are generally favored due to their easier implementation in reality, although a seemingly inevitable drawback of undesired reflection exists in such cloaks. Here we suggest using high-order transformations to create smooth moduli at the outer boundary of the cloak, therefore completely eliminating the detrimental scattering within the limit of geometric optics. We apply this scheme to a non-magnetic cylindrical cloak and demonstrate that the scattered field is reduced substantially in a cloak with optimal quadratic transformation as compared to its linear counterpart.
Cite
@article{arxiv.0707.3641,
title = {Non-Magnetic Cloak without Reflection},
author = {Wenshan Cai and Uday K. Chettiar and Alexander V. Kildishev and Graeme W. Milton and Vladimir M. Shalaev},
journal= {arXiv preprint arXiv:0707.3641},
year = {2007}
}
Comments
8 pages, 3 figures