1. Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan;
2. Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation Somerset West, Western Cape, South Africa;
3. UNESCO-UNISA Africa chair in Nanoscience and Nanotechnology, College of Graduate Studies, University of South Africa, Pretoria, South Africa;
4. Pakistan Academy of Sciences, Islamabad, Pakistan