Supplemental Materials

The experimental methods, including the synthesis of the large/small CDs, the LSC fabrication, the characterizations and calculations. The TEM pictures for CDs and CdSe dots with similar size. The FTIR and XPS characterizations of CDs. The calcium ion precipitation experiment. Dependency of PL spectra with excitation wavelength for the large/small CDs. The design process of reverse engineering method. The LSC fabrication process. The detailed performances statistic of published CDs LSC works. The detailed parameters of the multi-film coating.