The nature of strength enhancement and weakening by pentagon–heptagon defects in graphene
Abstract
Graphene is often referred to as the strongest material in existence. That may be so for a perfect crystal, but most graphene sheets are polycrystalline, and the grain boundaries affect their mechanical properties. A new study reveals that both the density and detailed arrangement of the defects that form the grain boundaries play a significant part in determining the strength of a polycrystalline graphene sheet.
- Publication:
-
Nature Materials
- Pub Date:
- September 2012
- DOI:
- 10.1038/nmat3370
- Bibcode:
- 2012NatMa..11..759W