Tom G. Mackay is a graduate of the Universities of Edinburgh, Glasgow, and Strathclyde. His university education was supported by the British Heart Foundation and The Carnegie Trust for The Universities of Scotland. He is Professor of Applied Electromagnetic Theory in the School of Mathematics at the University of Edinburgh, and also an adjunct professor in the Department of Engineering Science and Mechanics at The Pennsylvania State University. In 2006/07 he held a Royal Society of Edinburgh/Scottish Executive Support Research Fellowship and in 2009/2010 a Royal Academy of Engineering/Leverhulme Trust Senior Research Fellowship. He is a Fellow of the Institute of Physics (UK), Optica (formerly Optical Society of America) and SPIE—The International Society for Optics and Photonics. His research interests are based on the electromagnetic theory of complex mediums, including homogenization and surface waves.Akhlesh Lakhtakia is Evan Pugh University Professor and Charles Godfrey Binder (Endowed) Professor of Engineering Science and Mechanics at The Pennsylvania State University. He received his B.Tech. (1979) and D.Sc. (2006) degrees in Electronics Engineering from the Institute of Technology, Banaras Hindu University, and his M.S. (1981) and Ph.D. (1983) degrees in Electrical Engineering from the University of Utah. He was the Editor-in-Chief of the Journal of Nanophotonics from its inception in 2007 through 2013. He has been elected a Fellow of the American Association for the Advancement of Sciences, American Physical Society, Institute of Physics (UK), Optical Society of America, SPIE--The International Society for Optics and Photonics, Institute of Electrical and Electronics Engineers, Royal Society of Chemistry, and Royal Society of Arts. His current research interests relate to electromagnetic fields in complex mediums, sculptured thin films, surface multiplasmonics and electromagnetic surface waves, mimumes, multicontrollable metasurfaces, thin-film solar cells, forensic science, bioreplication, engineered biomimicry, and biologically inspired design for environment. He has co-edited three research volumes published by Springer.