Dr. Waleed A. El-Said is currently an Associate Professor of Nanotechnology in the Chemistry Department at Assiut University in Egypt. At Assiut University he has established a lab on Nanobiotechnology. His research interests include the synthesis and characterization of nanomaterials and their fabrication. Nabil A. Abdel Ghany is a group leader (full research professor) in the Physical Chemistry Department, National Research Centre (NRC), Egypt. His research interests lie in electrochemistry, nanomaterials, corrosion protection, biomaterials, and energy production, conversion, and storage.