Prof. Ali Rostami
University of Tabriz, Iran
|Title: Invisibility Cloak Design: Challenges and Solutions|
As all of us know, invisibility was one of the most important and amazing dreams for mankind and remain still open to realize completely in future. In recent years based on roadmaps presented for material science and engineering, in the past 10 years, the invisibility cloak design was one of hot topics in emerging science and technology. Despite of successful achievements which was recently obtained in this field, a lot of considerable unsolved problemsremain to be practical. In this lecture the invisibility cloak design procedure is generally reviewed and successful reported results are presented too. As an example invisibility cloak design for single frequency in microwave frequency band is demonstrated. The next step in this lecture is extending the invisibility cloak design theory for broad band operation.To this end, the nanocomposite material based multilayer structure, presented by my research group, as novel idea for broadband metamaterial is illustrated. We show that broadband metamaterials using this idea can be realized in whole bands of the electromagnetic spectrum. In this talk by reviewing global activities, I will introduce my research group achievements for 1-20 GHz in microwave band, 3-5 micrometer in mid infrared band and 400 to 700 nm in visible band. Considering the presented idea, invisibility cloak for broadband operation is proposed and simulated results are discussed and finally those results validated by experimental data. In this talk, we try to introduce this approach as a powerful method for implementation of invisibility cloak in broad band and present our theoretical and experimental obtained results. Finally some of remaining challenges in this field is pointed out for future activities by other researchers.
Ali Rostami received his PhD degree in photonic/electronic engineering from Amirkabir University of Technology, Tehran, Iran in 1998. He was in sabbatical leaves in the University of Toronto 2004-2005 at the Photonic Group and in the University of California, Irvine at electronic engineering group 2014-2015. Dr Rostami is full Professor of Electronic Engineering and Photonics Science at the University of Tabriz. His teaching and research interests include metamaterials, quantum optics, nanophotonics, optoelectronics devices, solution process optoelectronic devices, nonlinear optics, optical integrated circuits and nanotechnology. He is a senior member of the Optical Society of America. He is the author and co-author of more than 250 scientific international journals and more than 500 conference papers and 15 text books in Persian, 15 book chapters and 3 books published in Springer Verlag, Germany and two books under publication in Springer Verlag too. Also, he collaborates with some international journals as reviewer boards and works as editorial committee of four Iranian journals and three international journals. Prof. Rostami has served on several other committees and panels in government, industry, and technical conferences. Also, Prof. Rostami is founder of Photonics and Nanocrystals Research Lab. (PNRL) at University of Tabriz. School of Engineering-Emerging Technologies is another project that was established by Prof. Rostami at University of Tabriz since 2008. Also, he is chair of center of Excellence for mechatronics during 2005-2012 and president of Iranian Mechatronics Society 2010 to 2012. Dr. Rostami was selected as distinguished researcher of the University of Tabriz several times and in 2007 and 2010 he was elected as distinguished researcher in engineering field in Iran, also, he was selected as distinguished researcher and Professor by Ministry of Science, Research and Technology at 2010 and 2011 respectively. Prof. Rostami was vice chancellor for research and technology at University of Tabriz 2008-2012. Also, Prof. Rostami was chairman of ASEPE 2012, 2013 and Optics and Photonics 2009 conferences in Iran. Also, he is technical committee member of a lot of conferences in Iran and overseas. Finally he is founder and CEO of ASEPE Company that is active in nanotechnology area and produce nanoparticles and colloids.