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Updated: Jun 10, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
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Epitaxial graphene on Cu(111).

Li Gao1, Jeffrey R Guest, Nathan P Guisinger

  • 1Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA.

Nano Letters
|August 4, 2010
PubMed
Summary

Researchers grew graphene on copper using ethylene decomposition. This study observed domain boundaries, highlighting a challenge in producing high-quality graphene on copper substrates.

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Area of Science:

  • Materials Science
  • Surface Science
  • Condensed Matter Physics

Background:

  • Graphene synthesis is crucial for advanced electronic applications.
  • Copper (Cu) is a common substrate for graphene growth.
  • Controlling graphene quality on copper remains a challenge.

Purpose of the Study:

  • To report the first successful growth of graphene on single crystal Cu(111) via ethylene decomposition.
  • To investigate the structural and electronic properties of the synthesized graphene.
  • To identify challenges in achieving high-quality graphene on copper.

Main Methods:

  • Thermal decomposition of ethylene in an ultrahigh vacuum (UHV) chamber.
  • Scanning tunneling microscopy (STM) for surface imaging.
  • Scanning tunneling spectroscopy (STS) for electronic property analysis.

Main Results:

  • Successful synthesis of graphene on Cu(111) for the first time.
  • Observation of monolayer graphene island nucleation.
  • Identification of two predominant domain orientations.
  • Formation of numerous domain boundaries with increasing graphene coverage.

Conclusions:

  • The growth of graphene on Cu(111) via ethylene decomposition is feasible.
  • Domain boundaries present a significant challenge for high-quality graphene production on copper.
  • Further research is needed to minimize domain boundaries for improved graphene.

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