| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Materials through High Resolution Coherent Imaging
|
| Presentation Title |
Advances in Phase Retrieval for In Situ Observation of Dislocation Dynamics in Gold Microcrystals |
| Author(s) |
Jason Nick Porter, Ross Harder, Wonsuk Cha, Siddharth Maddali, Yueheng Zhang, Matthew Wilkin, Anastasios Pateras, Landon Schnebly, Joshua Miller, Robert Suter, Anthony Rollett, Richard Sandberg |
| On-Site Speaker (Planned) |
Jason Nick Porter |
| Abstract Scope |
The dynamic interplay between atomic dislocations and grain boundaries is poorly understood. This is partly because it occurs on the mesoscale---too large and slow for molecular dynamics modeling, but too small and fast for electron microscopy. We present recent advances in Bragg coherent diffraction imaging, specifically multipeak/multigrain coupled phase retrieval, which provide consistent reconstructions of the three-dimensional atomic structure of gold microcrystals on mesoscopic length scales. This allows a new type of experiment that allows nanometer-scale imaging of dislocation dynamics grain boundaries during in situ sample deformation. We present the results of these experiments, which are (at the time of abstract submission) planned for the fall and winter of 2022/23. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Thin Films and Interfaces, |