1. Department of Chemical Engineering Technology, Faculty of Engineering Technology Universiti Malaysia Perlis, Kampus UniCITI Alam Padang Besar Malaysia
2. School of Chemical Engineering Engineering Campus, Universiti Sains Malaysia Penang Malaysia
3. Department of Physics Carnegie Mellon University Pittsburgh PA USA
4. Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology and Built Environment UCSI University Cheras Malaysia