About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Phonon Transport Across Curved Interfaces in Si-Ge Composite Nanowires. |
| Author(s) |
Oreoluwa Ololade Adesina, Masoumeh Mahmoudi Gahrouei, Andres Lee, Daniel McCoy, Riccardo Rurali, Laura de Sousa Oliveira |
| On-Site Speaker (Planned) |
Oreoluwa Ololade Adesina |
| Abstract Scope |
Silicon-Germanium (Si-Ge) nanowire materials find diverse applications in many industries. Thermal transport in small-scale heterogeneous systems is controlled by interfacial thermal resistance, but the individual contributions of transport mechanisms are unknown. We analyze the effect of curvature at the axial intersection of Si-Ge composite nanowires on their thermal conductivity and thermal boundary resistance. The Müller-Plathe, a reverse non-equilibrium molecular dynamics approach, is used to calculate thermal conductivity. Heat transport in nanowires with lengths 100 - 550 nm, varying interfacial curvatures, and thicknesses (wire diameter) is modeled. We probe boundary resistance for directional transport between Si (hot) and Ge (cold), and between Ge (hot) and Si (cold). This research primarily aims to enhance our understanding of phonon thermal transport and significance of boundary scattering at the interfaces of low-dimensional materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Modeling and Simulation, Computational Materials Science & Engineering |