Transactions of Nanjing University of Aeronautics & Astronautics
Tunable Electromagnetic Cloaking by External Field
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Abstract:
Electromagnetic cloaking based on the scattering cancellation method have been reviewed. The possibility of designing the tunable electromagnetic cloaking is analytically suggested with a single cloak composed of homogeneous materials, including semiconductor, superconductor, ferrite and ferroelectrics by using Mie scattering theory. The simulated results demonstrate that the cloaks with these homogeneous materials can drastically reduce the total scattering cross sections of the cloaked system by using the finite element method. These cloaking frequencies can be controlled by external field through tuning the permittivity or permeability of these materials by the applied field, such as temperature, magnetic field and electric field. These may provide some potential ways to design tunable cloaking with considerable flexibility.
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Project Supported:
Supported by the National Natural Science Foundation of China (11174147, 11104144).
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