Atomic Electron Tomography Helps Observe 3D Atomic Structure of Nanomaterials
Written by AZoNanoMay 13 2021
Atoms are known to be the fundamental building blocks for all kinds of materials. To customize functional characteristics, it is crucial to precisely establish their atomic structures.
A. Overall atomic structure of a Pt nanoparticle determined in this study, with SiN substrate represented as black and gray disks. B. Identified facet structure of the Pt nanoparticle, showing all facets. C, D. Iso-surfaces of reconstructed 3D density from the electron tomography, before (c) and after (d) the deep-learning-based augmentation, respectively. E, F. Tomographic reconstruction volume intensity and traced atom positions. Each slice represents an atomic layer, and the blue dots indicate the traced 3D atomic positions before (e) and after (f) the deep-learning-based augmentation. The grayscale backgrounds are iso-surfaces of 3D density. Image Credit: The Korea Advanced Institute of Science and Technology.