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Dislocation-driven deformations in graphene
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Warner, Jamie H., Margine, Elena Roxana, Mukai, Masaki, Robertson, Alexander W., Giustino, Feliciano and Kirkland, Angus I. (2012) Dislocation-driven deformations in graphene. American Association for the Advancement of Science.
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Official URL: http://dx.doi.org/10.1126/science.1217529
Abstract
The movement of dislocations in a crystal is the key mechanism for plastic deformation in all materials. Studies of dislocations have focused on three-dimensional materials, and there is little experimental evidence regarding the dynamics of dislocations and their impact at the atomic level on the lattice structure of graphene. We studied the dynamics of dislocation pairs in graphene, recorded with single-atom sensitivity. We examined stepwise dislocation movement along the zig-zag lattice direction mediated either by a single bond rotation or through the loss of two carbon atoms. The strain fields were determined, showing how dislocations deform graphene by elongation and compression of C-C bonds, shear, and lattice rotations.
Item Type: | Report | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Journal or Publication Title: | Science | ||||||||
Publisher: | American Association for the Advancement of Science | ||||||||
ISSN: | 0036-8075 | ||||||||
Official Date: | 13 July 2012 | ||||||||
Dates: |
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Volume: | 337 | ||||||||
Number: | 6091 | ||||||||
Page Range: | pp. 209-212 | ||||||||
DOI: | 10.1126/science.1217529 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Copyright Holders: | American Association for the Advancement of Science | ||||||||
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