Khaled Hussein Mahmoud, Ph.D., is Professor in the Department of Physics, Khurmah University College, Taif University, Taif, KSA. Professor Khaled works in the field of polymer and polymer nancomposites. His main research lies in studying electrical, optical, thermal properties of polymers. Dr. Khaled studied physics Cairo University, Egypt. His studies of the polymers characteristics began during his Ph. D. thesis work at the Faculty of Science, Physics department, Cairo, Egypt. Subsequently, Dr. Khaled also completed a professor work at the University of Cairo. He works now at Taif University, KSA.