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Keywords:

  • crystal structure;
  • field emission;
  • graphene;
  • thin films;
  • vertical strips
Thumbnail image of graphical abstract

Carbon films made up of vertically standing, tall graphene strips can be peeled off a substrate. By this route, the film forms a cathode material with a long life and a high field enhancement factor for stable field emission. This film is a further step toward understanding and manipulating the intrinsic field-emission properties of graphene.