1. National Centre for Nanotechnology (NCN) Department of Metallurgy and Materials Engineering (DMME) Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore 45650 Islamabad Pakistan
2. University of Management and Technology (UMT) 54770 Lahore Pakistan
3. School of Chemical and Material Engineering (SCME) National University of Sciences and Technology (NUST) Sector H-12 44000 Islamabad Pakistan.