Send to

Choose Destination
ACS Nano. 2011 Mar 22;5(3):2142-6. doi: 10.1021/nn1033423. Epub 2011 Jan 31.

Grain boundary mapping in polycrystalline graphene.

Author information

Department of Physics and Center of Integrated Nanomechanical Systems, University of California at Berkeley, Berkeley, California 94720, United States.


We report direct mapping of the grains and grain boundaries (GBs) of large-area monolayer polycrystalline graphene sheets, at large (several micrometer) and single-atom length scales. Global grain and GB mapping is performed using electron diffraction in scanning transmission electron microscopy (STEM) or using dark-field imaging in conventional TEM. Additionally, we employ aberration-corrected TEM to extract direct images of the local atomic arrangements of graphene GBs, which reveal the alternating pentagon-heptagon structure along high-angle GBs. Our findings provide a readily adaptable tool for graphene GB studies.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center