Micron-sized diamond particles containing Ge-V and Si-V color centers
Zhang Hang-Cheng, Chen Cheng-Ke, Mei Ying-Shuang, Li Xiao, Jiang Mei-Yan, Hu Xiao-Jun
       

FESEM images of diamond particles growing for 75 min under the growth pressures of (a) 1.5 kPa, (b) 2.5 kPa, (c) 3.5 kPa, and (d) 4.5 kPa.