1. School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
2. Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
3. School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
4. National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
5. Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States