| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Operando study of the exfoliation dynamics of 2D materials by X-ray free electron laser MHz imaging and multiphysics modelling |
| Author(s) |
Kang Xiang, Ling Qin, Jiawei Mi |
| On-Site Speaker (Planned) |
Kang Xiang |
| Abstract Scope |
Ultrasonic liquid phase exfoliation is a promising method for the production of two-dimensional (2D) layered materials. A large number of studies have been made in investigating the underlying ultrasound exfoliation mechanisms. However, due to the experimental challenges in capturing the highly transient and dynamic phenomena in real-time at sub-μs time and µm length scales simultaneously, most reported theories or interpretations to date still remain elusive.
Here, using the X-ray Free Electron Laser Megahertz Microscopy and machine-learning method, we are able to reveal the ultrasound cavitation bubble cloud dynamics and graphite layer exfoliation dynamics with sub-μs and µm resolution. Complementary multiphysics modelling was also performed to calculate the shock waves produced at bubble cloud implosion and the resulting cyclic and impulsive stresses acting on the graphite materials. The new findings are scientifically and technologically important for developing highly efficient and optimal manufacturing strategies for wider range of 2D materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Modeling and Simulation, Other |