Hamidreza Taghvaee was born in Tehran, Iran 1990. He received the MSc degree in Wave&Fields from the K. N. Toosi University of Technology, Iran in 2016, the Cum laude, and the Ph.D. degree in Wireless Communications from the Polytechnic University of Catalonia, Barcelona Tech, Spain in 2021. Currently, he is a Research Fellow in the George Green Institute for Electromagnetic Research at the University of Nottingham, UK.
His main research interests are analytical and numerical modeling of electromagnetic problems, with application to wireless communications for 5G and 6G empowered by Reconfigurable Intelligent Metasurfaces (RIS).
Metamaterials, Metasurface, RIS, Electromagnetic, Antenna, Wireless communication
Object Illusion in Complex Electromagnetic Wave Environments (OBLICUE)
The ability to detect the presence and shape of arbitrary objects is of paramount importance in imaging technologies as well as in localization for the future generation of wireless networks. This capability currently stands on sophisticated digital signal processing algorithms that process and somehow invert the signal backscattered from a target. While most of the research effort has to date focused on improving the accuracy and efficiency of these algorithms, a key question that remains is whether we are able to hide an object from imaging/localization technologies. Inherently, there is a strong need to protect electronic devices from external attacks in the context of electromagnetic compatibility, and data sniffing in the context of wireless communications. One might think that the extensive research in optics and electromagnetics to achieve cloaking of objects is the way forward to hide objects. However, this technology never achieves a perfect concealing of the object and is only designed to operate in free space. The transformative idea that we put forward here avoids using a cloak and stands on dressing the part of the environment boundary with anomalous mirrors. A system of those mirrors creates the illusion of object displacement by shaping the electromagnetic wavefront. The reflection mask defining the mirror configurations will be engineered using advanced mathematical methods developed in the fields of quantum and statistical mechanics.
TAGHVAEE, HAMIDREZA, PITILAKIS, ALEXANDROS, TSILIPAKOS, ODYSSEAS, TASOLAMPROU, ANNA C., KANTARTZIS, NIKOLAOS V., KAFESAKI, MARIA, CABELLOS-APARICIO, ALBERT, ALARCON, EDUARD and ABADAL, SERGI, 2022. MULTIWIDEBAND TERAHERTZ COMMUNICATIONS VIA TUNABLE GRAPHENE-BASED METASURFACES IN 6G NETWORKS IEEE VEHICULAR TECHNOLOGY MAGAZINE. 17(2), 16-25
TAGHVAEE, HAMIDREZA, LIU, FU, DIAZ-RUBIO, ANA and TRETYAKOV, SERGEI, 2021. Subwavelength focusing by engineered power-flow conformal metamirrors PHYSICAL REVIEW B. 104(23),