Fracture behavior transition in (001) cracked metal nanoplates induced by the surface effect

Hokun Kim, Duc Tam Ho, Sung Youb Kim*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In this study, we show that the fracture mode of (001) cracked metal nanoplates is strongly dependent on the size through molecular dynamics simulations. Cracked nanoplates with smaller sizes exhibit an elastic instability-dominant fracture followed by a ductile behavior, whereas larger cracked nanoplates exhibit a brittle fracture. A brittle fracture is caused by an embedded crack, whereas the elastic instability-dominant fracture is due to a failure of the nanoplate by elastic instability, which is influenced by the surface effect. We provide numerical and theoretical evidence to show that the transition in the fracture behavior of a cracked metal nanoplate is due to the competition between the crack and the free surfaces.
Original languageEnglish
Pages (from-to)4277-4283
Number of pages7
JournalJournal of Physical Chemistry C
Issue number7
Early online date16 Feb 2021
Publication statusPublished - 25 Feb 2021
Externally publishedYes

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