Sajjad Haider is an Associate Professor at the Chemical Engineering Department, King Saud University, Riyadh, Saudi Arabia. He teaches graduate and MS students. His research work focuses on the development of metal nanoparticles, synthesis of renewable biopolymer composites, synthesis of polymer hydrogel, electrospun nanofibers and photocatalysts for biomedical and environmental applications. His articles appeared on the list of the highly cited and downloaded articles in the most prominent journals. Dr. Haider has developed a nanotechnology laboratory at the Chemical Engineering Department by acquiring funds through quality proposals. Besides quality articles, his proposals also resulted in patents.