“…Nanodiamond has high‐fluorescence quantum yield (ranging from 0.7 to 1), and is extremely photostable that permits extensive imaging without concern of signal decay (Chan, Liu, Leung, & Lo, ; Petrakova et al, ). They are highly biocompatible, nontoxic in nature (Terada, Sotoma, Harada, Igarashi, & Shirakawa, ) and can be surface functionalization without effecting N‐V centers (Chow et al, ). Using these advantages, the fluorescent nanodiamonds are used as subcellular biomarker, drug/gene delivery carrier, in vivo animal imaging, and tissue engineering (Mochalin, Shenderova, Ho, & Gogotsi, ; Prabhakar et al, ).…”