| Title | Information Metamaterial Systems |
| Authors | Cui, Tie Jun Li, Lianlin Liu, Shuo Ma, Qian Zhang, Lei Wan, Xiang Jiang, Wei Xiang Cheng, Qiang |
| Affiliation | Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China Peking Univ, Dept Elect, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China |
| Keywords | PHASE DISCONTINUITIES TERAHERTZ WAVES METASURFACE REFLECTION REFRACTION GRADIENT LIGHT INDEX CLOAK APERTURES |
| Issue Date | 21-Aug-2020 |
| Publisher | ISCIENCE |
| Abstract | Metamaterials have great capabilities and flexibilities in controlling electromag-netic (EM) waves because their subwavelength meta-atoms can be designed and tailored in desired ways. However, once the structure-only metamaterials (i.e., passive metamaterials) are fabricated, their functions will be fixed. To con-trol the EM waves dynamically, active devices are integrated into the meta -atoms, yielding active metamaterials. Traditionally, the active metamaterials include tunable metamaterials and reconfigurable metamaterials, which have either small-range tunability or a few numbers of reconfigurability. Recently, a special kind of active metamaterials, digital coding and programmable metama-terials, have been presented, which can realize a large number of distinct func-tionalities and switch them in real time with the aid of field programmable gate array (FPGA). More importantly, the digital coding representations of metamate-rials make it possible to bridge the digital world and physical world using the metamaterial platform and make the metamaterials process digital information directly, resulting in information metamaterials. In this review article, we firstly introduce the evolution of metamaterials and then present the concepts and basic principles of digital coding metamaterials and information metamaterials. With more details, we discuss a series of information metamaterial systems, including the programmable metamaterial systems, software metamaterial systems, intel-ligent metamaterial systems, and space-time-coding metamaterial systems. Finally, we introduce the current progress and predict the future trends of infor-mation metamaterials. |
| URI | http://hdl.handle.net/20.500.11897/591510 |
| DOI | 10.1016/j.isci.2020.101403 |
| Indexed | SCI(E) |
| Appears in Collections: | 信息科学技术学院 区域光纤通信网与新型光通信系统国家重点实验室 |
