Direct visualization of dislocation dynamics in grain-boundary scars

Peter Lipowsky, Mark J. Bowick, Jan H. Meinke, David R. Nelson, Andreas R. Bausch

Research output: Contribution to journalArticle

113 Scopus citations

Abstract

The structural features and the equilibrium dynamics of micrometer-scale spherical crystals formed by polystyrene particles adsorbed on the surface of a spherical water droplet were analyzed. Rapid dislocation glide with fluctuations over the barriers separating one local Peierls minimum from the next and rather weak binding of dislocations to their associated scars were observed. The long-distance dislocation diffusion glide constant was extracted directly from the experimental data and was found to be moderately faster than single-particle diffusion. The parameters of the Peierls potential induced by the underlying crystalline lattice were determined.

Original languageEnglish (US)
Pages (from-to)407-411
Number of pages5
JournalNature Materials
Volume4
Issue number5
DOIs
StatePublished - May 2005

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Lipowsky, P., Bowick, M. J., Meinke, J. H., Nelson, D. R., & Bausch, A. R. (2005). Direct visualization of dislocation dynamics in grain-boundary scars. Nature Materials, 4(5), 407-411. https://doi.org/10.1038/nmat1376