INVITED SPEAKERS

Prof. Mona Jarrahi

Professor of Electrical and Computer Engineering, University of California Los Angeles, USA

Talk Title

New Frontiers in Terahertz Technology

Abstract:

                          Although unique potentials of terahertz waves for chemical identification, material characterization, biological sensing, and medical imaging have been recognized for quite a while, the relatively poor performance, higher costs, and bulky nature of current terahertz systems continue to impede their deployment in field settings. In this talk, I will describe some of our recent results on developing fundamentally new terahertz electronic/optoelectronic components and imaging/spectrometry architectures to mitigate performance limitations of existing terahertz systems. In specific, I will introduce new designs of high-performance photoconductive terahertz sources that utilize plasmonic nanoantennas to offer terahertz radiation at record-high power levels of several milliwatts – demonstrating more than three orders of magnitude increase compared to the state of the art. I will describe that the unique capabilities of these plasmonic nanoantennas can be further extended to develop terahertz detectors and heterodyne spectrometers with quantum-level detection sensitivities over a broad terahertz bandwidth at room temperatures, which has not been possible through existing technologies. To achieve this significant performance improvement, plasmonic antennas and device architectures are optimized for operation at telecommunication wavelengths, where very high power, narrow linewidth, wavelength tunable, compact and cost-effective optical sources are commercially available. Therefore, our results pave the way to compact and low-cost terahertz sources, detectors, and spectrometers that could offer numerous opportunities for e.g., medical imaging and diagnostics, atmospheric sensing, pharmaceutical quality control, and security screening systems. And finally, I will briefly highlight our research activities on development of new types of high-performance terahertz passive components (e.g., modulators, tunable filters, and beam deflectors) based on novel reconfigurable meta-films. 

Biography:

                            Mona Jarrahi received her B.S. degree in Electrical Engineering from Sharif University of Technology in 2000 and her M.S. and Ph.D. degrees in Electrical Engineering from Stanford University in 2003 and 2007. She served as a Postdoctoral Scholar at the University of California Berkeley from 2007 to 2008. After serving as an Assistant Professor at the University of Michigan Ann Arbor, she joined the University of California Los Angeles in 2013 where she is currently a Professor of Electrical Engineering and the Director of the Terahertz Electronics Laboratory. Prof. Jarrahi has made significant contributions to the development of ultrafast electronic and optoelectronic devices and integrated systems for terahertz, infrared, and millimeter-wave sensing, imaging, computing, and communication systems by utilizing novel materials, nanostructures, and quantum well structures as well as innovative plasmonic and optical concepts. The outcomes of her research have appeared in 200 publications and 160 keynote/plenary/invited talks and have received a significant amount of attention from scientific news outlets including Huffington Post, Popular Mechanics, EE Times, IEEE Spectrum, Optics & Photonics News Magazine, Laser Focus world, and Photonics Spectra Magazine. Her scientific achievements have been recognized by several international and national prestigious awards including the Presidential Early Career Award for Scientists and Engineers (PECASE); Friedrich Wilhelm Bessel Research Award from Alexander von Humboldt Foundation; Moore Inventor Fellowship from the Gordon and Betty Moore Foundation; Kavli Fellowship by the USA National Academy of Sciences (NAS), Grainger Foundation Frontiers of Engineering Award from the USA National Academy of Engineering (NAE); Breakthrough Award from Popular Mechanics Magazine; Research Award from Okawa Foundation; Early Career Award in Nanotechnology from the IEEE Nanotechnology Council; Outstanding Young Engineer Award from the IEEE Microwave Theory and Techniques Society; Booker Fellowship from the USA National Committee of the International Union of Radio Science; Lot Shafai Mid-Career Distinguished Achievement Award from the IEEE Antennas and Propagation Society; Early Career Award from the USA National Science Foundation (NSF); Young Investigator Awards from the USA Office of Naval Research (ONR), the Army Research Office (ARO), and the Defense Advanced Research Projects Agency (DARPA); the Elizabeth C. Crosby Research Award from the University of Michigan; and the Distinguished Alumni Award from Sharif University of Technology. Prof. Jarrahi is a Fellow of IEEE, OSA, SPIE, and IOP societies and has served as a distinguished lecturer of IEEE, traveling lecturer of OSA, and visiting lecturer of SPIE societies. 

Prof. Tie Jun Cui

State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Talk Title

New-Architecture Information Systems Based on Information Metamaterials

Prof. Tie Jun Cui

State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Talk Title

New-Architecture Information Systems Based on Information Metamaterials

Abstract:

                        In traditional information systems (e.g. wireless communications), the electromagnetic (EM) wave is the carrier of digital information. The digital signals must be firstly converted to analog signals, and the analog signals are then mixed to the microwave frequency, and finally are transmitted to far regions by the EM waves. Thus, in the conventional information systems, the baseband digital signals and EM waves are processed separately and are studied by two different communities. Recently, we proposed the concept of digital coding metamaterials, which are characterized by digital particles (e.g. 0 and 1 with 180° phase difference for 1-bit coding; 00, 01, 10, and 11 with 90° phase difference for 2-bit coding, …). It was demonstrated that the EM waves can be manipulated by changing the digital coding sequences. The coding particles provide a link between the physical world and digital world, leading to digital metamaterials and field programmable metamaterials, which can be used to control the EM waves and digital information simultaneously in real time. The digital coding representation of metamaterials allows the concepts and signal processing methods in the information science to be used to the physical metamaterials, such as Shannon entropy, convolution theorem, and addition theorem. These studies set up the foundation of information metamaterials, which bridge the physical world and digital world to realize new-architecture information systems. In this presentation, I will mainly introduce the new wireless communication systems and intelligent imaging systems based on the information metamaterials. 

Biography:

                          Prof. Tie Jun Cui is the Chief Professor of Southeast University, Nanjing, China, and the academician of Chinese Academy of Science. He authored two books and published over 500 peer-review journal papers, which have been cited by more than 38000 times (H-index 96, Google Scholar). He proposed the concept of digital coding metamaterial, realized the first programmable metamaterial, and founded the new direction of information metamaterial. Dr. Cui received the National Natural Science Awards of China in 2014 and 2018, respectively. His researches are widely reported by Nature News, Science, MIT Technology Review, Scientific American, New Scientists, etc. Dr. Cui is an IEEE Fellow.

Prof. Ke Wu

Professor of Department of Electrical Engineering, Polytechnique Montréal, Canada

Talk Title

New-Architecture Information Systems Based on Information Metamaterials

Biography:

                                  Dr. Ke Wu is Endowed Industrial Research Chair in Future Wireless Technologies and Professor of Electrical Engineering at École Polytechnique (University of Montreal). He was the Canada Research Chair in RF and millimeter-wave engineering. He has been Director of the Poly-Grames Research Center and the Founding Director of the Center for Radiofrequency Electronics Research of Quebec. He held/holds visiting/honorary professorships at various universities around the world. Dr. Wu has graduated over 70 Ph.D. and 94 M.Sc. Students. He has authored/co-authored over 1300 referred papers, and a number of books and book chapters and filed more than 50 patents. Dr. Wu was the general chair of the 2012 IEEE MTT-S International Microwave Symposium. He was the 2016 President of the IEEE Microwave Theory and Techniques Society (MTT-S). He also served as the inaugural North-American representative in the General Assembly of the European Microwave Association. He was the recipient of many awards and prizes including the inaugural IEEE MTT-S Outstanding Young Engineer Award, 2004 Fessenden Medal of the IEEE Canada, 2009 Thomas W. Eadie Medal from the Royal Society of Canada, Queen Elizabeth II Diamond Jubilee Medal, 2013 Award of Merit of Federation of Chinese Canadian Professionals, 2014 IEEE MTT-S Microwave Application Award, the 2014 Marie-Victorin Prize (Prix du Quebec), 2015 Prix d’Excellence en Recherche et Innovation of Polytechnique Montréal, 2015 IEEE Montreal Section Gold Medal of Achievement, 2019 IEEE MTT-S Microwave Prize, and 2021 EIC Julian C. Smith Medal. He was an IEEE MTT-S Distinguished Microwave Lecturer. Dr. Ke Wu is a Fellow of the IEEE, Canadian Academy of Engineering and Royal Society of Canada (Academy of Science). 

More speakers will be updated soon ..