| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials: Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Theory of the Mechanical Exfoliation of 2D Materials |
| Author(s) |
Haoye Sun, Hannah Gramling, Vu Nguyen, Ali Javey, Hayden Taylor, Joel Ager, Daryl C. Chrzan |
| On-Site Speaker (Planned) |
Daryl C. Chrzan |
| Abstract Scope |
Mechanical exfoliation is typically not considered to be feasible as a route to manufacturing devices at scale, as the results films are often irregularly shaped, and not positioned with precision. Recently, we have demonstrated that mechanical exfoliation can be used as a reliable means to assemble ordered arrays of van der Waals heterostructures. Here, the theory underlying that process is presented. Using both atomic scale and continuum models, we identify the underlying physics governing mechanical exfoliation of 2D materials, and show how the effects of strain, twist and temperature influence the process. The model explains how a thin metallic layer can assist in the exfoliation process, and also suggests that yields can be improved if exfoliation is carried out at low temperatures.
This work is supported by NSF and by DOE, Office of Basic Energy Sciences.
|
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Modeling and Simulation, Process Technology |