1. Institute of Nanoscience and Nanotech-nology (ION2), Universiti Putra Malaysia (UPM), Serdang, Malaysia
2. Department of Chemistry, Faculty of Science, and the Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia (UPM), Serdang, Malaysia
3. 3 GanoDrop Unit, Biological Research Division, Malaysian Palm Oil Board, Kajang, Malaysia
4. Plant Pathology or Metabolomics, Sime Darby Technology Center 3, Universiti Putra Malaysia, Serdang, Malaysia
5. School of Electrical and Electronic Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang, Malaysia