Affiliation: | 1. Faculty of Science, School of Applied Physics, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailandkpewisan@kmitl.ac.th;3. College of Nanotechnology, King Mongkut's Institute of Technology Ladkrabang, Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand;4. ThEP Center, CHE, 328 Siayuthtaya Road, Bangkok 10400, Thailand;5. Faculty of Science, School of Applied Physics, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand |