Mario Guimarães Junior is a full professor at the Department of Electromechanics of the Federal Center for Technological Education of Minas Gerais (CEFET-MG), where he has been a permanent faculty member of the Postgraduate Program in Mining Engineering and the Industrial Automation Engineering, Mining Engineering, and Electronics Technician courses since 1992. He has also been a permanent faculty member of the Postgraduate Program in Biomaterials Engineering at UFLA-MG since 2021. He holds a PhD and a master's in materials engineering (UFOP/MG) and a bachelor's degree in science and mathematics (FAFI); is a specialist in materials engineering and rural electricity (UFLA/MG), and in education (CEUCLAR/SP). Research focus: composites, polymer blends, lignocellulosic materials, biopolymers, MOFs, biochar, and nanostructured materials. He is the author and co-author of numerous well-cited scientific articles in indexed national and international journals; book chapters; and a patent application with the INPI (Brazilian National Institute of Industrial Property). He is also an ad hoc technical reviewer for 52 indexed national and international scientific journals, and a member of the Editorial Board of the Engineering Science Technology Journal (Singapore). Scopus H-index: 18; Web of Science H-index: 17; Google Scholar H-index: 19. He is a member of the International Society for Development and Sustainability (ISDS), Japan, and the ACS American Chemical Society.