1. Universiti Teknologi MARA,School of Electrical Engineering, College of Engineering,Shah Alam,Selangor,Malaysia,40450
2. Universiti Teknologi MARA,Integrated Microelectronic System and Application, School of Electrical Engineering, College of Engineering,Shah Alam,Selangor,Malaysia,40450
3. Universiti Malaya,Nanotechnology and Catalysis Research Centre,Kuala Lumpur,Malaysia,50603