Microscopic description of yielding in glass based on persistent homology

Tatsuhiko Shirai, Takenobu Nakamura

Research output: Contribution to journalArticle

Abstract

Persistent homology (PH) was applied to probe the structural changes of glasses under shear. PH associates each local atomistic structure in an atomistic configuration to a geometric object, namely, a hole, and evaluates the robustness of these holes against noise. We found that the microscopic structures were qualitatively different before and after yielding. The structures before yielding contained robust holes, the number of which decreased after yielding. We also observed that the structures after yielding approached those of quickly quenched glass. This work demonstrates the crucial role of robust holes in yielding and provides an interpretation based on geometry.

Original languageEnglish
Article number074801
Journaljournal of the physical society of japan
Volume88
Issue number7
DOIs
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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