Yahya rahmat-samii

From EBG’s to Meta-Surfaces and Beyond: Recent Developments and Novel Engineering Applications

It has been over a quarter of a century that modern engineered materials have found their ways in manipulating electromagnetic waves. Advanced prototyping approaches and sound theoretical developments attracted many researchers worldwide to contribute and suggest novel devices with out-of-the-box characteristics. There exist now many applications in diverse areas of electromagentics engineering and antenna designs that researchers and engineers are excited to utilize the so-called “meta-materials” as part of their design tool kits. From frequency selective surfaces (FSS) to electromagnetic band-gap (EBG) ground planes, from impedance boundaries to Huygens metasurfaces, novel electromagnetic structures have been emerging in both microwaves and optics. Many intriguing phenomena occur within and on the surfaces of these structures with profound utilizations in practical applications such as low profile antennas, reflectarrays, transmitarrays, bending lights, orbital angular momentum beams, etc. This plenary talk will review the development of various electromagnetic meta-structures, as well as the state-of-the-art concepts, designs and manufacturing techniques including Fused Deposition Modeling (FDM), Stereolithography (SLA), Direct Metal Laser Sintering (DMLS), Inkjet printing and Charge-Programmed Multi-material 3D Printing. Furthermore, a wealth of practical examples will be presented to illustrate promising applications of these intriguing concepts. Representative materials will also be presented from two recent books, “Surface Electromagnetics: With Applications in Antenna, Microwave and Optical Engineering”, Eds. F. Yang and Y. Rahmat-Samii, Cambridge University Press, 2019, and “Electromagnetic Band Gap Structures in Antenna Engineering”, F. Yang and Y. Rahmat-Samii, Cambridge University Press, 2009.

Yahya Rahmat-Samii is a Distinguished Professor, a holder of the Northrop-Grumman Chair in electromagnetics, a member of the U.S. National Academy of Engineering (NAE), a Foreign Member of the Chinese Academy of Engineering (CAE) and the Royal Flemish Academy of Belgium for Science and the Arts, the winner of the 2011 IEEE Electromagnetics Field Award, and the Former Chairman of the Electrical and Computer Engineering Department, University of California at Los Angeles (UCLA), Los Angeles, CA, USA. He was a Senior Research Scientist with the Caltech/NASA’s Jet Propulsion Laboratory. He was the 1995 President of the IEEE Antennas and Propagation Society and 2009–2011 President of the United States National Committee (USNC) of the International Union of Radio Science (URSI). He has also served as an IEEE Distinguished Lecturer presenting lectures internationally. He has authored or coauthored more than 1100 technical journal and conference papers and has written over 35 book chapters and seven books. He has more than 20 cover-page IEEE publication articles. His research contributions cover diverse areas of modern electromagnetics and antennas spanning from small medical antennas to large space deployable antennas. His research interests include electromagnetics, antennas, measurements and diagnostics techniques, numerical and asymptotic methods, satellite and personal communications, human/antenna interactions and medical application, meta-materials and periodic structures, and ature inspired optimization algorithms. Dr. Rahmat-Samii is a fellow of IEEE, AMTA, ACES, EMA, and URSI. He was a recipient of the Henry Booker Award from URSI, in 1984, which is given triennially to the most outstanding young radio scientist in North America, the Best Application Paper Prize Award (Wheeler Award) of the IEEE Transactions on Antennas and Propagation in 1992 and 1995, the University of Illinois ECE Distinguished Alumni Award in 1999, the IEEE Third Millennium Medal and the AMTA Distinguished Achievement Award in 2000. In 2001, he received an Honorary Doctorate Causa from the University of Santiago de Compostela, Spain. He received the 2002 Technical Excellence Award from JPL, the 2005 URSI Booker Gold Medal presented at the URSI General Assembly, the 2007 IEEE Chen- To Tai Distinguished Educator Award, the 2009 Distinguished Achievement Award of the IEEE Antennas and Propagation Society, the 2010 UCLA School of Engineering Lockheed Martin Excellence in Teaching Award, and the 2011 campus-wide UCLA Distinguished Teaching Award. He was also a recipient of the Distinguished Engineering Educator Award from The Engineers Council in 2015, the John Kraus Antenna Award of the IEEE Antennas and Propagation Society and the NASA Group Achievement Award in 2016, the ACES Computational Electromagnetics Award and the IEEE Antennas and Propagation S. A. Schelkunoff Best Transactions Prize Paper Award in 2017, and the prestigious Ellis Island Medal of Honor in 2019. The medals are awarded annually to a group of distinguished U.S. citizens who exemplify a life dedicated to community service. These are individuals who preserve and celebrate the history, traditions, and values of their ancestry while exemplifying the values of the American way of life and are dedicated to creating a better world. He is the Designer of the IEEE Antennas and Propagation Society logo which is displayed on all IEEE AP-S publications.