(“Functional double-shelled silicon nanocrystals for two-photon fluorescence cell imaging: spectral evolution and tuning”; Sourov Chandra, Batu Ghosh, Grégory Beaune, Usharani Nagarajan, Takao Yasui, Jin Nakamura, Tohru Tsuruoka, Yoshinobu Baba,
Naoto Shirahata and Françoise M. Winnik; Nanoscale, 2016,8, 9009-9019, DOI:
10.1039/C6NR01437B)