Zhou, L., H. Zhang, Y. Luan, S. Cheng, and L.-J. Fan. “Amplified Detection of Iron Ion Based on Plasmon Enhanced Fluorescence and Subsequently Fluorescence Quenching”. Nano-Micro Letters, vol. 6, no. 4, Sept. 2014, pp. 327-34, doi:10.1007/s40820-014-0005-5.