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Thermostimulated formation of silver and gold nanoparticles in porous silicon dioxide matrices |
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| Authors: | A. O. Rybaltovskii S. S. Ilyukhin N. V. Minaev M. I. Samoilovich M. Yu. Tsvetkov V. N. Bagratashvili |
| Affiliation: | 1. Skobeltsyn Research Institute of Nuclear Physics, Lomonosov Moscow State University, GSP-1, Moscow, 119991, Russia 2. Department of Perspective Laser Technologies, Institute for Laser and Information Technologies, Russian Academy of Sciences, Pionerskaya ul. 2, Troitsk, Moscow, 142190, Russia 3. Tekhnomash Central Research Institute of Technology, ul. Ivana Franko 4, Moscow, 121108, Russia |
| Abstract: | Manifestations of thermostimulated formation and subsequent transformation of silver and gold nanoparticles in porous opal and Vycor glass matrices are studied using optical spectroscopy. Two temperature ranges for silver nanoparticles are revealed, where first-type particles transform into another type of particles. With gold nanoparticles in these matrices, a temperature range in which one type of particles transforms into another type is established. An effect of complete blackening of Vycor glass samples, caused by their annealing, is revealed, and a rationalization of this effect is given. |
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