Grain boundaries effects on hole morphology and growth during solid state dewetting of thin films

Vadim Derkach, Amy Novick-Cohen, Eugen Rabkin

Research output: Contribution to journalArticlepeer-review

Abstract

We probe the effects of grain boundaries on thin film dewetting numerically for initially circular and elongated holes in single and bi-crystalline systems. We find that grain boundaries play a critical role in determining hole morphologies, in particular in the formation of highly branched hole morphologies, since while elongated holes in single crystals tend to become rounder over time, circular holes in bi-crystals destabilize, leading to accelerated dewetting along the grain boundaries.

Original languageEnglish
Pages (from-to)115-118
Number of pages4
JournalScripta Materialia
Volume134
DOIs
StatePublished - 1 Jun 2017

Keywords

  • Dewetting
  • Grain boundaries
  • Simulation
  • Surface diffusion
  • Thin films

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • General Materials Science

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