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Design method for quasi-isotropic transformation materials based on inverse Laplace's equation with sliding
Zheng Chang1, Xiaoming Zhou, Jin Hu
1School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
Abstract:
Recently, there are emerging demands for isotropic material parameters, arising from the broadband requirement of the functional devices. Since inverse Laplace's equation with sliding boundary condition will determine a quasi-conformal mapping, and a quasi-conformal mapping will minimize the transformation material anisotropy, so in this work, the inverse Laplace's equation with sliding boundary condition is proposed for quasi-isotropic transformation material design. Examples of quasi-isotropic arbitrary carpet cloak and waveguide with arbitrary cross sections are provided to validate the proposed method. The proposed method is very simple compared with other quasi-conformal methods based on grid generation tools.
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