Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 103, Issue 3, Pages 715-719Publisher
SPRINGER
DOI: 10.1007/s00339-010-6206-y
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In this paper, the transient responses of some devices which are based on transformation electromagnetics are studied, such as invisible cloaks and concentrators, by using the Finite-Difference Time-Domain (FDTD) numerical technique. In particular, effects of the inherent losses as well as the coating size of the ideal cylindrical cloak on its bandwidth and cloaking performance are examined. In addition, it is demonstrated that the performance of transformation electromagnetics based devices is affected by the material parameters in the design, although they may behave nicely under monochromatic plane wave illuminations. The obtained results are of interest for the future practical implementation of these structures.
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