1. National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan, R.O.C.
2. Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan,
R.O.C.
3. Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan,
R.O.C.
4. Institute of Nano
Technology, National Chiao Tung University, Hsinchu, 30010, Taiwan,
R.O.C.