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Title: Characterization of the cleaning process on a transferred graphene

Intrinsic graphene possesses many outstanding physical and chemical properties, but their full explorations are often hindered by the effects of substrate and/or contamination. The authors employ the ultrahigh vacuum transmission electron microscopy equipped with a residual gas analyzer to in-situ characterize an effective decontamination process on a suspended graphene. Raman spectroscopic spectra further verify the cleanness of the resultant graphene membrane. The authors also present two contrasting growth morphologies of copper nanoparticles obtained on both clean and unclean graphene surfaces and show that the intrinsic growth dynamics can only manifest on the surface without contaminations.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. Institute of Physics, Academia Sinica, Taipei 115, Taiwan (China)
  2. (China)
  3. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan and Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan (China)
  4. Department of Optics and Photonics, National Central University, Chung-Li 320, Taiwan (China)
  5. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan (China)
  6. Research Center of Applied Science, Academia Sinica, Taipei 115, Taiwan (China)
  7. Department of Engineering and System Science, National Tsing Hua University, Hsinchu 300, Taiwan (China)
  8. Institute of Physics, Academia Sinica, Taipei 115, Taiwan and Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan (China)
Publication Date:
OSTI Identifier:
22318031
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films; Journal Volume: 32; Journal Issue: 5; Other Information: (c) 2014 American Vacuum Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHEMICAL PROPERTIES; COPPER; GRAPHENE; NANOPARTICLES; PRESSURE RANGE NANO PA; TRANSMISSION ELECTRON MICROSCOPY