1. Materials Technology Program School of Energy Environment and Materials King Mongkut's University of Technology Thonburi (KMUTT) 126 Pracha Uthit Rd., Bang Mod Thung Khru Bangkok 10140 Thailand
2. National Nanotechnology Center (NANOTEC) National Science and Technology Development Agency (NSTDA) 111 Thailand Science Park Pathum Thani 12120 Thailand