Thermal Conductance along Hexagonal Boron Nitride and Graphene Grain Boundaries
| Autor: | Timon Rabczuk, Mohammad Reza Azadi Kakavand, Raahul Palanivel Uma, Ali Hossein Nezhad Shirazi, Meysam Makaremi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Energies, Vol 11, Iss 6, p 1553 (2018) |
| Druh dokumentu: | article |
| ISSN: | 1996-1073 11061553 |
| DOI: | 10.3390/en11061553 |
| Popis: | We carried out molecular dynamics simulations at various temperatures to predict the thermal conductivity and the thermal conductance of graphene and hexagonal boron-nitride (h-BN) thin films. Therefore, several models with six different grain boundary configurations ranging from 33–140 nm in length were generated. We compared our predicted thermal conductivity of pristine graphene and h-BN with previously conducted experimental data and obtained good agreement. Finally, we computed the thermal conductance of graphene and h-BN sheets for six different grain boundary configurations, five sheet lengths ranging from 33 to 140 nm and three temperatures (i.e., 300 K, 500 K and 700 K). The results show that the thermal conductance remains nearly constant with varying length and temperature for each grain boundary. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|