1. Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
2. Physics Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
3. Department of Chemical and Materials Engineering, Faculty of Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
4. Materials Science and Engineering, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
5. Nagoya Industrial Science Research Institute, Nagoya 464-0819, Japan