Formation of Bismuth Nanoparticles on Electrically Conductive and Dielectric Substrates
| Autor: | O. E. Bryl, V. V. Artemov, S. A. Kiiko, G. N. Kozhemyakin, A. V. Kiiko |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
020502 materials Metals and Alloys chemistry.chemical_element 02 engineering and technology Dielectric Substrate (electronics) Evaporation (deposition) Vacuum evaporation chemistry.chemical_compound Thermal conductivity 0205 materials engineering chemistry Chemical engineering Nano Aluminium oxide Carbon |
| Zdroj: | Russian Metallurgy (Metally). 2021:68-73 |
| ISSN: | 1555-6255 0036-0295 |
| Popis: | Bismuth nanoparticles are prepared by vacuum evaporation technique onto a glass carbon and aluminium oxide substrates in an Ar atmosphere. Computing program is developed to determine the sizes and amount of nano- and microparticles using electron microscopy images. The substrate material and the evaporation time are found to determine the sizes, shape, and density of nano- and microparticles. Bismuth nanoparticles with an average size of ~40 nm are formed on these substrates. The high thermal conductivity of aluminium oxide provides the increase in the density of bismuth nanoparticles and a decrease in their average sizes as compared to those of bismuth nanoparticles deposited on glass carbon substrates. The sizes and density of microparticles (more than 100 nm in size) deposited on glass carbon substrates are found to be higher than those of the particles deposited on aluminium oxide substrates. The majority of Bi nano- and microparticles formed on the substrates are nonspherical shape. |
| Databáze: | OpenAIRE |
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