Abstract
Metamaterials and metasurfaces have attracted much attention due to their powerful ability to control electromagnetic (EM) waves. In this paper, we review the recent developments in the field of EM metamaterials, starting from their exotic physics to their applications in novel information systems. First, we show the fundamental understanding on traditional metamaterials based on the effective medium theory and related applications, such as invisibility cloaks and meta-lenses. Second, we review the two-dimensional versions of metamaterials, i.e., metasurfaces, for controlling spatial waves and surface waves and thereafter present their typical designs. In particular, we briefly introduce spoof surface plasmon polaritons and their applications in microwave frequencies. Following the above approach, we emphatically present the concepts of digital coding metamaterials, programmable metamaterials, and information metamaterials. By extending the principles of information science to metamaterial designs, several functional devices and information systems are presented, which enable digital and EM-wave manipulations simultaneously. Finally, we give a brief summary of the development prospects for microwave metamaterials.
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Rui-yuan WU wrote the first draft of the manuscript. Tie-jun CUI helped organize the manuscript. Rui-yuan WU and Tie-jun CUI revised and edited the final version.
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Rui-yuan WU and Tie-jun CUI declare that they have no conflict of interest.
Project supported by the National Key Research and Development Program of China (Nos. 2017YFA0700201, 2017YFA0700202, and 2017YFA0700203), the National Natural Science Foundation of China (Nos. 61631007, 61731010, 61735010, 61722106, 61701107, and 61701108), the Fund for International Cooperation and Exchange of the National Natural Science Foundation of China (No. 61761136007), the 111 Project (No. 111-2-05), the Fundamental Research Funds for the Central Universities, the Postgraduate Research & Practice Innovation Program of Jiangsu Province, China (No. KYCX17 0092), and the Scientific Research Foundation of Graduate School of Southeast University, China (No. YBJJ-1815)
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Wu, Ry., Cui, Tj. Microwave metamaterials: from exotic physics to novel information systems. Front Inform Technol Electron Eng 21, 4–26 (2020). https://doi.org/10.1631/FITEE.1900465
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DOI: https://doi.org/10.1631/FITEE.1900465
Key words
- Metamaterial
- Effective medium theory
- Metasurface
- Surface plasmon polaritons
- Digital coding
- Programmable
- Information