1. Department of Chemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
2. Department of Computer Engineering, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
3. National Science and Technology Development Agency, National Nanotechnology Center, Thailand Science Park, Pathumthani 12120, Thailand
4. Center for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, KU Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand