1. Materials Science and Engineering Program; Mahidol University; Bangkok Thailand
2. Photonics Technology Laboratory; National Electronics and Computer Technology Center (NECTEC); National Science and Technology Development Agency (NSTDA); Pathumthani Thailand
3. School of Electronic Engineering; Institute of Engineering; Suranaree University of Technology; Nakhon Ratchasima Thailand
4. Department of Pathology; Faculty of Medicine-Ramathibodi Hospital; Mahidol University; Bangkok Thailand
5. Department of Physics; Faculty of Science; Mahidol University; Bangkok Thailand