Further reading:
B.-M. Chang, H.-H. Lin, L.-J. Su, W.-D. Lin, R.-J. Lin, Y.-K. Tzeng, R. T. Lee, Y. C. Lee, A. L. Yu, and H.-C. Chang, "Highly fluorescent nanodiamonds protein-functionalized for cell labeling and targeting," Adv. Funct. Mater. 23, 5737-5745 (2013).