Dynamic study and applications of metamaterial systems |
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| Authors: | Xun-ya Jiang Zheng Liu Zi-xian Liang Pei-jun Yao Xu-lin Lin |
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| Institution: | 1. National Key Laboratory of the Functional Material, Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
2. Department of Physics, University of Science and Technology of China, Hefei, 230026, China
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| Abstract: | We investigate the dynamic characteristics of metamaterial systems, such as the temporal coherence gain of the superlens, the causality limitation on the ideal cloaking systems, the relaxation process and essential elements in the dispersive cloaking systems, and the extending of the working frequency range of cloaking systems. The key point of our study is the physical dispersive properties of metamaterials, which are well-known to be intrinsically strongly dispersive. With physical dispersion, new physical pictures can be obtained for the waves propagating inside metamaterial, such as the “group retarded time” for waves inside the superlens and cloak, the causality limitation on real metamaterial systems, and the essential elements for design optimization. Therefore, we believe the dynamic study of metamaterials will be an important direction for further research. All theoretical derivations and conclusions are demonstrated by powerful finite-difference time-domain simulations. |
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| Keywords: | metamaterial dynamic dispersion |
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