Information Metasurfaces: From Concepts to Systems Tie Jun Cui Southeast University, China |
Abstract: Metamaterials are traditionally described by effective medium parameters due to the subwavelength scale of unit particles. The continuous nature of medium parameters makes the traditional metamaterials behave as analog metamaterials. Recently, the concept of coding metamaterials or metasurfaces has been proposed, in which metamaterials are characterized by digital coding particles of ‘0’ and ‘1’ with opposite phase responses. It was demonstrated that the electromagnetic waves can be manipulated by changing the coding sequences of ‘0’ and ‘1’. The coding particles provide a link between the physical world and digital world, leading to digital metamaterials and even field programmable metamaterials, which can be used to control the electromagnetic waves in real time. The digital coding representation of metamaterials or metasurfaces can also allow the concepts and signal processing methods in information science to be introduced to physical metamaterials, realizing extreme controls to the electromagnetic waves. Such studies set up the foundation of information metamaterials and metasurfaces. In this presentation, the coding, digital, and field programmable metamaterials and metasurfaces are systematically introduced with particular emphases on recently new developments. The future trend of information metasurface is also predicted.
Biography:
Prof. Tie Jun Cui received the Ph.D. degree in Xidian University, Xi’an, China, in 1993. In March 1993, he joined the Department of Electromagnetic Engineering, Xidian University, and was promoted to an Associate Professor in November 1993. From 1995 to 1997 he was a Research Fellow with the Institut fur Hochstfrequenztechnik und Elektronik (IHE) at the Universityof Karlsruhe, Germany. In July 1997, he joined the Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, first as Postdoctoral Research Associateand then Research Scientist. In September 2001, he became a Cheung-Kong Professor with Department of Radio Engineering, Southeast University, Nanjing, China. From 2013, he has been a Representative of People’s Congress of China.
Dr. Cui is the first author of the books Metamaterials – Theory, Design, and Applications (Springer, Nov. 2009) and Metamaterials: Beyond Crystals, Noncrystals, and Quasicrystals (CRC Press, Mar. 2016). He has published over 400 peer-review journal papers in Science, PNAS, Nature Communications, Light Science & Applications, Physical Review Letters, Advanced Materials, etc., which have been cited by more than 17300 times. Dr. Cui was awarded a Research Fellowship from the Alexandervon Humboldt Foundation, Bonn, Germany, in 1995. He received Young Scientist Award from the International Union of Radio Science (URSI) in 1999, National Science Foundation of China for Distinguished Young Scholars in 2002, and Special Government Allowance awarded by Department of State, China, in 2008. He received the First Prize of Natural Science from Ministry of Education, China, in 2011, and the Second Prize of National Natural Science, China, in 2014. His research has been selected as “Optics in 2016” by Optics and Photonics News Magazine (OSA), “10 Breakthroughs of China Optics in 2016”, “10 Breakthroughs of China Sciencein 2010”, “Best of 2010” in New Journal of Physics, and Research Highlights in many academic journals. His work has been reported by Nature News, Science, MIT Technology Review, Scientific American, New Scientists, etc.