1. Faculty of Science, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, Kampar, Perak, Malaysia
2. Liquid Crystal Research Laboratory, School of Chemical Sciences, University Sains Malaysia, Minden, Penang, Malaysia
3. "Department of Materials Science & Engineering, National Chiao Tung University, 1001 Ta- Hsueh Road, Hsinchu, Taiwan"