1. Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, Kangar 01000, Malaysia
2. School of Bioprocess Engineering, Universiti Malaysia Perlis, Arau 02600, Malaysia
3. School of Microelectronic Engineering, Arau 02600, Universiti Malaysia Perlis, Perlis, Malaysia
4. Department of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
5. Centre of Innovative Nanostructures & Nanodevices (COINN), Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia