“…That is, O 2− -doped LiF crystals can be colored electrolytically at various coloration temperatures and voltages using a homemade electrolysis apparatus with a pointed cathode and a flat anode. In our recent researches, various inorganic crystals containing anionic impurities or crystalline water and organic crystals have been colored electrolytically using a homemade electrolysis apparatus [15][16][17][18][19][20][21][22][23][24]. In this work, OMC LiF crystals are colored electrolytically using the same electrolysis apparatus with a pointed cathode and a flat anode.…”