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Title: Influence of irradiation upon few-layered graphene using electron-beams and gamma-rays

Few-layered graphene (FLG) is irradiated by electron beams and gamma rays. After 100‚ÄČkeV electron irradiation, the edges of FLG start bending, shrinking, and finally generate gaps and carbon onions due to sputtering and knock-on damage mechanism. When the electron beam energy is increased further to 200‚ÄČkeV, FLG suffers rapid and catastrophic destruction. Unlike electron irradiation, Compton effect is the dominant damage mechanism in gamma irradiation. The irradiation results indicate the crystallinity of FLG decreases first, then restores as increasing irradiation doses, additionally, the ratio (O/C) of FLG surface and the relative content of oxygen groups increases after irradiation.
Authors:
; ; ; ; ; ; ;  [1]
  1. School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China)
Publication Date:
OSTI Identifier:
22311095
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPTON EFFECT; DAMAGE; ELECTRON BEAMS; GAMMA RADIATION; GRAPHENE; IRRADIATION; KEV RANGE; KNOCK-ON; OXYGEN; PHYSICAL RADIATION EFFECTS; RADIATION DOSES; SPUTTERING; SURFACES