Alexandru Mihai Grumezescu is a lecturer in the Department of Science and Engineering of Oxide Materials and Nanomaterials, at the Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, Romania. He is an experienced researcher and published editor in the field of nano and biostructures. He is the editor-in-chief of two international open access journals: Biointerface Research in Applied Chemistry, Letters and Applied NanoBioScience. Dr. Grumezescu has published more than 200 peer-reviewed papers, authored nine books, and has served as an editor for more than 50 scholarly books. Valentina Grumezescu is a Scientific Researcher at the National Institute for Lasers, Plasma & Radiation Physics, Magurele, Romania. She is an experienced researcher in the field of fabrication of biomedical thin coatings by laser processing. She has published over 40 research and review papers in the field of nanobiomaterials and several book chapters on the application of laser processing in biomedical field. She is also the assistant editor of the journal Biointerface Research in Applied Chemistry.