Direct Observation of "Pac-Man" Coarsening.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 28700241.
- Also identified by DOI 10.1021/acs.nanolett.7b01137.
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Abstract
We report direct observation of a "Pac-Man" like coarsening mechanism of a self-supporting thin film of nickel oxide. The ultrathin film has an intrinsic morphological instability due to surface stress leading to the development of local thicker regions at step edges. Density functional theory calculations and continuum modeling of the elastic instability support the model for the process.