Direct visualization of large-area graphene domains and boundaries by optical birefringency

Dae Woo Kim, Yun Ho Kim, Hyeon Su Jeong, Hee Tae Jung

Research output: Contribution to journalArticle

171 Citations (Scopus)

Abstract

The boundaries between domains in single-layer graphene1-4 strongly influence its electronic properties5-12. However, existing approaches for domain visualization, which are based on microscopy and spectroscopy2,12-16, are only effective for domains that are less than a few micrometres in size. Here, we report a simple method for the visualization of arbitrarily large graphene domains by imaging the birefringence of a graphene surface covered with nematic liquid crystals. The method relies on a correspondence between the orientation of the liquid crystal and that of the underlying graphene, which we use to determine the boundaries of macroscopic domains.

Original languageEnglish
Pages (from-to)29-34
Number of pages6
JournalNature Nanotechnology
Volume7
Issue number1
DOIs
Publication statusPublished - 2012 Jan

Fingerprint

Graphite
Graphene
graphene
Visualization
Liquid Crystals
Nematic liquid crystals
Birefringence
Crystal orientation
Liquid crystals
liquid crystals
Microscopic examination
Imaging techniques
birefringence
micrometers
microscopy
electronics

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, Dae Woo ; Kim, Yun Ho ; Jeong, Hyeon Su ; Jung, Hee Tae. / Direct visualization of large-area graphene domains and boundaries by optical birefringency. In: Nature Nanotechnology. 2012 ; Vol. 7, No. 1. pp. 29-34.
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Direct visualization of large-area graphene domains and boundaries by optical birefringency. / Kim, Dae Woo; Kim, Yun Ho; Jeong, Hyeon Su; Jung, Hee Tae.

In: Nature Nanotechnology, Vol. 7, No. 1, 01.2012, p. 29-34.

Research output: Contribution to journalArticle

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