Mario Junior Mencagli received a B.Sc. and M.Sc. degree (cum laude) in Telecommunications Engineering from the University of Siena, Italy, in 2008 and 2013, respectively. In 2016, he received a Ph.D. degree (cum laude) in electromagnetics from University of Siena, Italy, under the supervision of Prof. Stefano Maci. In 2014, he spent few months as a visiting Ph.D. student in Thales Research and Technology, Paris, France, where he was involved with characterization and testing of optically reconfigurable transmission lines based on checkerboard metasurfaces. From January 2017 to July 2019, Dr. Mencagli was a Postdoctoral Researcher in Prof. Nader Engheta’s group at the University of Pennsylvania, Philadelphia, USA. Since August 2019, he is an Assistant Professor in the Department of Electrical and Computer Engineering at the University of North Carolina at Charlotte, North Carolina, USA. He organized a special session about low- and high-dimensional metamaterials at EuCAP 2020. He has given invited talks in highly ranked universities and institutions. Dr. Mencagli has been working on reconfigurable metasurface, periodic structures, RF circuits, numerical methods for electromagnetic problems, high-frequency techniques for electromagnetic scattering, metamaterials for both microwave and optical regimes, transformation optics, metatronic, filter at optical and UV frequencies, analog computing, and time-varying metamaterials. Dr. Mencagli was granted with a three-year scholarship from Thales Research and Technology in 2013. He was also the recipient of the Best Thesis Award of XXIX cycle of the Ph.D. Program in Information Engineering and Sciences at the University of Siena in 2018. This distinction is awarded by Springer Theses, which publishes a new book series with the selected Ph.D. Theses.