Chergui (PhD, 1981, Université Paris-Sud, Orsay) is Emeritus Professor of Chemistry at the Ecole Polytechnique Fédérale de Lausanne. He studied and worked in the UK, France and Germany. His research focuses on the fundamental aspects of photo-induced dynamics in molecules, proteins, solids and nanosystems, using novel ultrafast spectroscopic tools, which he pioneered, in the deep-ultraviolet and in the X-ray spectral domains. He has been a user of synchrotron radiation, ultrashort pulse lasers and more recently of X-ray free electron lasers. Chergui received, among others: Humboldt Research Award, Kuwait Prize for Physics, Earle K. Plyler Prize from American Physical Society (APS), Edward Stern Prize for Lifetime Achievements (International X-ray Absorption Society), Liversidge Award from Royal Society of Chemistry (RCS), the Khwarizmi International Award, and the Ahmed Zewail Award in Ultrafast Science and Technology (American Chemical Society). He is a Fellow of APS, Optical Society of America, RCS, European Physical Society, American Crystallographic Association, European Academy of Sciences, among others, and a Foreign Correspondent of the Spanish Royal Academy of Sciences.

Sayed is dean of engineering, École polytechnique fédérale de Lausanne, Switzerland. He has served as distinguished professor and chairman of electrical engineering at the University of California, Los Angeles (UCLA) where he founded the Adaptive Systems Laboratory (1996). Recognized as a highly cited researcher and a member of the US National Academy of Engineering, he served as president of the IEEE Signal Processing Society (SPS) in 2018-19. An author of over 570 scholarly publications and six books, his research involves several areas including adaptation and learning theories, data and network sciences, statistical inference, and multi-agent systems. His awards include: 2020 Norbert Wiener Society Award, 2015 Education Award from IEEE-SPS; 2014 Papoulis Award from European Association for Signal Processing; 2013 Meritorious Service Award and 2012 Technical Achievement Award from IEEE-SPS, 2005 Terman Award from American Society for Engineering Education, 2003 Kuwait Prize, and several Best Paper awards from scientific organizations. He is a fellow of IEEE, European Association for Signal Processing (EURASIP), and American Association for the Advancement of Science (AAAS).

Zichichi, em. prof. of Adv. Phys., U. of Bologna, has authored over 1100 sci. papers incl. 7 discoveries, 5 inventions, 3 original ideas which opened new avenues in high energy subnuclear physics and 4 high-precision measurements of fundamental physics properties. Among the discoveries: nuclear antimatter; among the inventions: an electronic circuit for time-of-flight measurements with a precision of seventy thousandth of a billionth of a second; among the original ideas that which brought to the discovery of the third column in the fundamental structure of the Universe. The great projects of European Physics (LEP and LAA at CERN, GRAN SASSO at INFN, HERA at DESY) are linked to his name, for his seminal contributions in their conception, study and implementation phases. He has been in charge of high-level offices and received 102 prizes, distinctions and medals in 15 countries.