Marcos Zayat obtained his PhD in Chemistry from the Hebrew University of Jerusalem, Israel, in 1997, where he developed novel Sol-Gel derived coatings with optical properties. His PhD Thesis “Photochromism, Electrochromism and Gasochromism in Sol-Gel Glasses”, was supervised by Prof. Renata Reisfeld. He joined the Materials Science Institute of Madrid in 1998, where he is currently a tenured scientist. His research interests are centered around the development of Sol-Gel based materials for optical and electrooptical applications: Photochromic films, electrooptic materials based on dispersions of liquid crystal in glasses (GDLC), mixed oxides nanoparticles, pigments, inks, coatings for UV-light protection, antiscratching coatings, antireflective coatings, intelligent windows, etc. An important part of his research activities is oriented to solve industrial demands for coatings with specific optical requirements. He has participated in more than 20 research projects and research contracts with Industrial partners, and has authored more than 55 scientific papers, several book chapters and 6 patents. Marcos Zayat has Co-Chaired the XVII International Sol-Gel Conference held in Madrid in August 2013. Since 2012, Dr. Zayat has been appointed as Deputy Director of the Materials Science Institute of Madrid.