Dai, X., K. D. Rasamani, F. Hu, and Y. Sun. “Mesoporous SiO2 Nanoparticles: A Unique Platform Enabling Sensitive Detection of Rare Earth Ions With Smartphone Camera”. Nano-Micro Letters, vol. 10, no. 4, June 2018, p. 55, doi:10.1007/s40820-018-0208-2.