| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Theory of Mechanical Exfoliation of van der Waals Layered Materials |
| Author(s) |
Daryl C. Chrzan, Haoye Sun, Ozan Sahin, Joel Ager, Ali Javey |
| On-Site Speaker (Planned) |
Daryl C. Chrzan |
| Abstract Scope |
Mechanical exfoliation is known to produce high quality van der Waals materials suitable for research studies. However, mechanical exfoliation is still not often thought of as a large scale nano-manufacturing approach. Recently, the mechanical exfoliation and transfer of order arrays of 100 μm × 100 μm transition metal dichalcogenide patches using a thin-film assisted one-exfoliation-step process with yields as high as 50% has been demonstrated. A theory for this process is introduced and used to consider the role in determining yield of the thin-film, temperature, and the rate at which the monolayer is separated from the source material. The theory predicts that using the thin film to strain and/or twist the top layer of the exfoliation source is key to obtaining high yields. Moreover, the theory suggests that exfoliating from thin initial sources at low temperatures and at slow speeds can increase yields. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Electronic Materials, Thin Films and Interfaces |