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Since the advent of transformation optics and scattering cancelling technology, a plethora of unprecedented metamaterials, especially invisibility cloaks, have been successfully demonstrated in various communities, e.g., optics, acoustics, elastic mechanics, dc electric field, dc magnetic field, and thermotics. A long‐held captivation is that transformation‐optic metamaterials of anisotropic or noncentrosymmetric...
Based on coordinate transformation, a novel method for exploring open cloaks is investigated. Two types of cloaks are proposed with continuous boundary and discontinuous boundary, respectively. The advantage of such cloaks is that the hidden object can be controlled to exchange information with the outer region or not. Although open cloaks do not perform as well as closed cloaks, they still can minimize...
As we know, some anisotropic materials are difficult to be realized in the practical synthesis and applications. However, the previously reported optimized EM cloaking are homogeneous anisotropic layers. Moreover, the performance of the EM cloaking shell will be decreased if strictly requiring the optimized value of material parameters. In this paper, a material reconstruction method is used to resolve...
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