1. Surface Analysis and Materials Engineering Research Group
2. School of Engineering & Information Technology
3. Murdoch University
4. Murdoch
5. Australia
6. Department of Physics
7. School of Distance Education
8. Universiti Sains Malaysia
9. 11800 Minden
10. Malaysia
11. School of Chemical Sciences
12. Department of Chemical Engineering
13. Universitas Riau
14. Pekanbaru
15. Indonesia