Xueyuan Chen earned his B.Sc. degree from the University of Science and Technology of China (1993) and his Ph.D. from Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (1998). From 2001 to 2005, he was a postdoctoral research associate at the Chemistry Division of Argonne National Laboratory, U.S. Department of Energy, where he studied the photophysics and photochemistry of heavy elements. In 2005, he joined the faculty at FJIRSM, where he is currently professor and group leader in Material Chemistry and Physics. His research focuses on the chemistry, optical spectroscopy and bioapplications of lanthanide-doped luminescent nanomaterials. He has authored more than 100 journal publications and six book chapters, co-authored a book on the spectroscopy of laser and luminescent materials, and holds 25 patents. Yongsheng Liu was born in Shandong, China. He earned his BS degree (2001) in Chemistry from Shandong Normal University. He received his MS (2007) and PhD (2010) degrees in Physical Chemistry from FJIRSM, Chinese Academy of Sciences. He joined Prof. Xueyuan Chen’s group as a research assistant professor in 2010 and was promoted to research associate professor in 2012. Currently, his research interest focuses on the optical spectroscopy and bioapplications of lanthanide-doped nanomaterials. Datao Tu was born in Hubei, China. He earned his BS degree (2006) from Wuhan University of Technology and later received his PhD degree (2011) in Materials Physics and Chemistry from FJIRSM, Chinese Academy of Sciences. He joined Prof. Xueyuan Chen’s group as a research assistant professor in July 2011. His research interest focuses on the chemical synthesis, optical spectroscopy and biodetection of lanthanide-doped nanoprobes.