1. School of Physics & Materials Studies Universiti Teknologi MARA Shah Alam Selangor Malaysia
2. Microwave Research Institute Universiti Teknologi MARA Shah Alam Selangor Malaysia
3. Department of Physics Faculty of Science Universiti Putra Malaysia, UPM Serdang Selangor Malaysia
4. Nanomaterial Synthesis and Characterization Laboratory (NSCL) Institute of Nanoscience and Nanotechnology (IONS2) Universiti Putra Malaysia Serdang Selangor Malaysia