Constantin (Konstantin) R. Simovski (Simovsky, Simovskii, Simovskiy, born 1957, Russia) earned his PhD (Candidate in Physics and Mathematics) degree in 1986. Institution of defense: Leningrad Polytechnical Institute (LPI). The degree was in Radio Science. In 2000 he earned the degree Dr. Sci. (Doctor of Sciences in Physics and Mathematics (the scientific area included both Radio Science and Optics). Institution of defense: State Polytechnical University of St. Petersburg (former LPI). Graduating from LPI in 1980 he worked as an engineer-physicist until 1992 when he was with the Soviet scientific and industrial firm "Impulse". His researches areas were as follows: antennas for special communication systems (1980-1987); artificial electromagnetic phenomena in the ionosphere and magnetosphere plasmas (1987-1992). Started as an engineer he became in 1991 the head of a scientific group. In 1992 - 2008 he was with the St. Petersburg Institute of Fine Mechanics and Optics (now University ITMO – Information Technologies, Mechanics and Optics). He pursued researches in the fields: electromagnetics for microwave applications (1993-1998), theory and applications of photonic and electromagnetic band-gap structures, electromagnetic scattering in lattices, optical properties of nanoparticles, and homogenization models for meta-materials (1999-2008). Starting as a university teacher he became full professor in 2001. Since 2008 he has been with the Helsinki University of Technology – TKK, now Aalto University. In 2008-2012 he occupied the post of visiting professor. His researches in Finland were in the following fields: electromagnetic metamaterials for nanosensing, for energy harvesting systems, for nanophotonic components; electromagnetic characterization of nanostructured metamaterials. By the decision of the President of Aalto University on 24.08.2012 Constantin Simovski, Dr. Sci., has been appointed to the tenure track position of Full Professor in Electromagnetic Materials in the Department of Radio Science and Engineering at the Aalto University, School of Electric and Electronic Engineering.

Sergei A. Tretyakov received the Dipl. Engineer-Physicist, the Candidate of Sciences (Ph.D.), and the Doctor of Sciences degrees (all in radiophysics) from the St. Petersburg State Technical University (Russia), in 1980, 1987, and 1995, respectively. From 1980 to 2000, he was with the Radiophysics Department, St. Petersburg State Technical University. Presently, he is a Professor of radio engineering at the Department of Radio Science and Engineering, Aalto University, Finland. Prof. Tretyakov worked as visiting scientist, CEA-CESTA (French Atomic Energy Commission research centre), also affiliated with the University of Bordeaux, Laboratory of Wave-Material Interactions, in 1994, and as a visiting professor at Abbe Center of Photonics, Friedrich Schiller University Jena, Germany (June–July 2013) and at the Department of Photonics Engineering, Technical University of Denmark (Jan. 2013 – April 2013). His main scientific interests are electromagnetic field theory, complex media electromagnetics and microwave engineering. He is the General Chair of the conference series Congress on Advanced Electromagnetic Materials in Microwaves and Optics (Metamaterials) (2007-2014). Prof. Tretyakov served as President of the European Virtual Institute for Artificial Electromagnetic Materials and Metamaterials (Metamorphose VI) during 2007-2013 and as Chairman of the St. Petersburg IEEE ED/MTT/AP Chapter from 1995 to 1998.

Nam Ha-Van was born in Viet Nam. He received his B.S. degree from the School of Electronics and Telecommunications, Hanoi University of Science and Technology, Hanoi, Viet Nam, in 2012, and his Ph.D. degree in Information and Telecommunication Engineering from Soongsil University, Seoul, South Korea, in February 2019. He was a postdoctoral researcher with Soongsil University from March 2019 to September 2020. Currently, he is a postdoctoral researcher in Prof. Sergei Tretyakov's group in the Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, Finland. His research interests include wireless power transfer, metamaterials, antennas, and energy harvesting systems.

Shamsul Arefeen Al Mahmud was born in Dhaka, Bangladesh, in 1994. He received his B.Sc. degree in electrical engineering from United International University, Bangladesh, in 2015. He received his M.Sc. degree in autonomous systems from Aalto University, Finland, and KTH Royal Institute of Technology, Sweden, in 2020. Currently, he has started his D.Sc. degree at the Department of Electronic and Nano-engineering, School of Electrical Engineering, Aalto University, Finland. His main research interest is in wireless power transfer systems.