1. Division of Nanophotonics; CAS Center for Excellence in Nanoscience; National Center for Nanoscience and Technology; Beijing 100190 P. R. China
2. College of Material Science and Engineering; Beijing Institute of Fashion Technology; Beijing 10029 China
3. The Armed Police General Hospital; Beijing 100039 China
4. Harvard Medical School and Wellman Center for Photomedicine; Massachusetts General Hospital; 65 Landsdowne Street Cambridge MA 02139 USA
5. Harvard-MIT Division of Health Sciences and Technology; Massachusetts Institute of Technology; Cambridge MA 02139 USA
6. University of Birmingham; Birmingham B15 2TT UK
7. Beijing Institute of Nanoenergy and Nanosystems; Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST); Beijing 100083 P. R. China