1. Department of Mechanical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
2. School of Materials Science and Engineering, Faculty of Science, University of New South Wales, Sydney 2052, Australia
3. Department of Physics, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
4. Department of Mechanical Engineering, Pennsylvania State University, University Park, PA 16802, USA
5. School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
6. School of Physics, University of New South Wales, Sydney, NSW 2052, Australia