Effect of Nano-sized Metal Colloids on Color Change of Photosensitive Glass by Using X-ray Irradiation

摘要

X-ray irradiation was applied to control the size of metal colloids in a silicate glass to make a high precise photosensitive glass containing K_2O, Na_2O, ZnO BaO, 0.01-0.05wt.% Au metal as sensitizer, <1.2wt.% Sb_2O_3 and SnO_2 as thermal reducer. Colorimetry showed that X-ray irradiation effectively works to make the color of red system. Transmission electron microscopy revealed that the metal colloids were oxided and had uniform and spherical shape of 10-20 nm. Au colloid made various colors like pink after heating at 400 °C, red at 500 °C and dark-red at 600°C Ag colloid made them like yellow-green at 400 °C, yellow at 500 °C and dark-brown, respectively.