5 papers · 1 filter
PtyRAD: A High-performance and Flexible Ptychographic Reconstruction Framework with Automatic Differentiation
Chia-Hao Lee, Steven E. Zeltmann, Dasol Yoon +2
Electron ptychography has recently achieved unprecedented resolution, offering valuable insights across diverse material systems, including in three dimensions. However, high-quali…
3D Atomic-Scale Metrology of Strain Relaxation and Roughness in Gate-All-Around (GAA) Transistors via Electron Ptychography
Shake Karapetyan, Steven E. Zeltmann, Glen Wilk +3
To improve transistor density and electronic performance, next-generation semiconductor devices are adopting three-dimensional architectures and feature sizes down to the few-nm re…
Random Forest Prediction of Crystal Structure from Electron Diffraction Patterns Incorporating Multiple Scattering
Samuel P. Gleason, Alexander Rakowski, Stephanie M. Ribet +5
Diffraction is the most common method to solve for unknown or partially known crystal structures. However, it remains a challenge to determine the crystal structure of a new materi…
Imaging interstitial atoms with multislice electron ptychography
Zhen Chen, Yu-Tsun Shao, Steven E. Zeltmann +5
Doping impurity atoms is a strategy commonly used to tune the functionality of materials including catalysts, semiconductors, and quantum emitters. The location of dopants and thei…
Iterative Phase Retrieval Algorithms for Scanning Transmission Electron Microscopy
Georgios Varnavides, Stephanie M. Ribet, Steven E. Zeltmann +7
Scanning transmission electron microscopy (STEM) has been extensively used for imaging complex materials down to atomic resolution. The most commonly employed STEM modality, annula…