Surface dynamics lie at the heart of many areas of materials and chemical science, including heterogeneous catalysis, epitaxial growth, and device fabrication. Characterizing the dynamics of surface adsorption, reactions, and diffusion at the atomic scale is crucial to understanding and controlling such processes. Here, we use aberration-corrected scanning transmission electron microscopy to analyze the diffusive behavior of Pt atoms adsorbed on the Si(110) surface and characterize the effects of the electron beam on adatom motion, including a bias introduced by the raster scan of the probe. We further observe the evolution of the Si(110) surface, revealing evidence of developing surface steps attributed to the 16 × 2 surface reconstruction. These results demonstrate a framework for studying complex atomic-scale surface dynamics using aberration-corrected electron microscopy.

Topics
Molecular dynamics, Reactive force field, Diffusion, Image processing, Machine learning, Electron microscopy, Atom manipulation, Surface dynamics, Surface physics, Catalysts and Catalysis
© 2018 Author(s).
2018
Author(s)

Supplementary Material

Supplementary Material- zip file
You do not currently have access to this content.