Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography

L. Tapasztó, Gergely Dobrik, Philippe Lambin, L. Bíró

Research output: Contribution to journalArticle

714 Citations (Scopus)

Abstract

The practical realization of nanoscale electronics faces two major challenges: the precise engineering of the building blocks and their assembly into functional circuits. In spite of the exceptional electronic properties of carbon nanotubes, only basic demonstration devices have been realized that require time-consuming processes. This is mainly due to a lack of selective growth and reliable assembly processes for nanotubes. However, graphene offers an attractive alternative. Here we report the patterning of graphene nanoribbons and bent junctions with nanometre-precision, well-defined widths and predetermined crystallographic orientations, allowing us to fully engineer their electronic structure using scanning tunnelling microscope lithography. The atomic structure and electronic properties of the ribbons have been investigated by scanning tunnelling microscopy and tunnelling spectroscopy measurements. Opening of confinement gaps up to 0.5 eV, enabling room-temperature operation of graphene nanoribbon-based devices, is reported. This method avoids the difficulties of assembling nanoscale components and may prove useful in the realization of complete integrated circuits, operating as room-temperature ballistic electronic devices.

Original languageEnglish
Pages (from-to)397-401
Number of pages5
JournalNature Nanotechnology
Volume3
Issue number7
DOIs
Publication statusPublished - Jul 2008

Fingerprint

Nanoribbons
Carbon Nanotubes
Graphite
atomic structure
Graphene
Lithography
graphene
Microscopes
lithography
microscopes
Scanning
Electronic properties
scanning
electronics
Crystal atomic structure
assembly
Scanning tunneling microscopy
Ballistics
Nanotubes
Electronic structure

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering
  • Materials Science(all)
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography. / Tapasztó, L.; Dobrik, Gergely; Lambin, Philippe; Bíró, L.

In: Nature Nanotechnology, Vol. 3, No. 7, 07.2008, p. 397-401.

Research output: Contribution to journalArticle

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