About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Hume-Rothery Symposium: Interface Structure and Properties: Impact on Microstructure Evolution
|
| Presentation Title |
Microstructure Evolution in Thin Films: Solid-State Dewetting Scenarios and Tailoring Self-Assembly |
| Author(s) |
Marco Salvalaglio |
| On-Site Speaker (Planned) |
Marco Salvalaglio |
| Abstract Scope |
Solid-state dewetting consists of the breakup and reorganization of continuous films at high temperatures, driven by surface diffusion, interface migration, and the interplay of surface, interface, and grain boundary energies. It provides a model system for studying microstructure evolution and for tailoring nanostructure self-assembly. This presentation will explore various solid-state dewetting scenarios studied through phase-field modeling and validated by experiments. An overview of the dewetting of single-crystalline films for the fabrication of ordered nanostructures is first provided. Strained single-crystalline films are then shown to undergo a spinodal-like solid-state dewetting regime, where elastic stresses trigger spontaneous pattern formation. This mechanism offers a prototypical route to produce large-scale disordered but correlated (hyperuniform) structures. Finally, the impact of free surfaces on the microstructure evolution of polycrystalline films during solid-state dewetting and beyond is discussed, illustrating novel insights as well as modeling challenges. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Modeling and Simulation, Computational Materials Science & Engineering |