| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Strain-Induced Moiré Patterns in Non-Twisted 2D Materials: Evolution Mechanism and Interface Dynamics |
| Author(s) |
Hesam Askari, Aditya Dey |
| On-Site Speaker (Planned) |
Hesam Askari |
| Abstract Scope |
Twisting layers in van-der-Waals (vdW) materials have historically provided a mechanism to produce Moiré patterns. However, applying strain alone can also generate these patterns, eliminating the need for interlayer rotation. This opens up possibilities for engineering novel material configurations with exotic quantum properties. This work presents the mechanistic principles behind the formation and evolution of strain-induced Moirés in bilayer graphene. We identified a three-stage interlayer dynamic process governing the evolution of Moiré cells and specified the strain thresholds for their stability using atomistic simulations with a machine-learned potential. We quantify the onset of each stage for various film sizes under various straining and un-straining conditions. Our analyses reveal that strain localization leads to distinct, well-defined Moiré patterns and swirl-like domains during unloading. These findings set forth crucial atomic-scale insights for Moiré engineering in vdW materials, guiding the development of strain-induced Moiré superlattices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Computational Materials Science & Engineering, Electronic Materials |