Розрахунок теплопровiдностi a-SiO2 та нанокомпозита на його основi методом молекулярної динамiки
Thermal conductivity in amorphous SiO2 (a-SiO2) has been studied in a wide range of temperatures, by using the nonequilibrium molecular dynamics method and the Beest–Kramer–Santen, Tersoff, and Vashishta empirical potentials. The thermal conductivity of an a-SiO2-based composite with Si nanocrystals...
Saved in:
| Date: | 2019 |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | English Ukrainian |
| Published: |
Publishing house "Academperiodika"
2019
|
| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019042 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Ukrainian Journal of Physics |
Institution
Ukrainian Journal of Physics| Summary: | Thermal conductivity in amorphous SiO2 (a-SiO2) has been studied in a wide range of temperatures, by using the nonequilibrium molecular dynamics method and the Beest–Kramer–Santen, Tersoff, and Vashishta empirical potentials. The thermal conductivity of an a-SiO2-based composite with Si nanocrystals is calculated with the use of the Tersoff potential. The thermal conductivity of the nanocomposite is shown to firstly decrease and then to increase, as the silicon volumetric ratio grows. The obtained results are explained by the enhanced scattering of thermal vibrations at the matrix–Si nanocrystal boundaries. |
|---|