David L. Sales received MSci degree in Chemical Engineering from the Universidad de Cádiz (Spain), also benefiting for a formative year of study at the University of Manchester Institute of Science and Technology. After a short period working as a process engineer in Repsol petrochemical company, he earned a grant from the Spanish Science and Education Ministry to start the doctoral thesis. In 2008 he completed a PhD in Materials Science under the supervision of Sergio I. Molina and Rafael Garcia, Full Professors at Universidad de Cádiz. He visited EMAT group at Techniche Universität (Antwerp, Belgium) for a month, STEM group at Oak Ridge National Laboratory (TN, USA) for six months, and the HREM group at University of Cambridge (U.K.) for the same period. He is currently Aggregate Professor at Universidad de Cádiz, where he teaches Materials Science and Metallurgical Engineering in several engineering degrees. His recent research has concentrated on electron nanoscopies of semiconducting materials, and synthesis and characterization of graphene nanocomposites.