Prof. Omar Hamed Mohamed Abdel Kader, Professor and Faculty Member, Department of Physics and Astronomy, College of Science, Kind Saud University, Riyadh, Saudi Arabia. Member of the Training and Community Partnership Unit, Technical Director of the Electron Microscope Unit, Faculty Member, and Researcher specializes in the synthesis of nanostructures, inorganic and magnetic materials, and solving the internal structures and determining the physical properties of materials using electron microscopy and X-rays. He works to characterize these types of materials using X-ray diffraction, X-ray fluorescence spectrum, EDS maps of the micro-composition of elements, magnetic properties, alternating and continuous electrical conductivity, real and imaginary isolation constants, thermal properties using (DTA, TGA), and optical properties. He prepares and equips photovoltaic cells, measuring their efficiency through voltage measurements with current in darkness and light.. In addition to teaching theoretical and experimental physics courses, also teaches electron microscopy courses, examining and characterizing biological and non-biological samples using scanning electron microscopy. certified trainer at the Deanship of Skills Development at King Saud University and a certified trainer at the Saudi Chemical Society.