Observation of strain effect on the suspended graphene by polarized Raman spectroscopy

Cheng Wen Huang, Bing Jie Lin, Hsing Ying Lin, Chen Han Huang, Fu Yu Shih, Wei Hua Wang, Chih Yi Liu, Hsiang-Chen Chui

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We report the strain effect of suspended graphene prepared by micromechanical method. Under a fixed measurement orientation of scattered light, the position of the 2D peaks changes with incident polarization directions. This phenomenon is explained by a proposed mode in which the peak is effectively contributed by an unstrained and two uniaxial-strained sub-areas. The two axes are tensile strain. Compared to the unstrained sub-mode frequency of 2,672 cm-1, the tension causes a red shift. The 2D peak variation originates in that the three effective sub-modes correlate with the light polarization through different relations. We develop a method to quantitatively analyze the positions, intensities, and polarization dependences of the three sub-peaks. The analysis reflects the local strain, which changes with detected area of the graphene film. The measurement can be extended to detect the strain distribution of the film and, thus, is a promising technology on graphene characterization.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalNanoscale Research Letters
Volume7
DOIs
Publication statusPublished - 2012 Dec 18

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Graphene
Raman spectroscopy
graphene
Polarization
polarization
Tensile strain
Light polarization
strain distribution
red shift
causes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Huang, Cheng Wen ; Lin, Bing Jie ; Lin, Hsing Ying ; Huang, Chen Han ; Shih, Fu Yu ; Wang, Wei Hua ; Liu, Chih Yi ; Chui, Hsiang-Chen. / Observation of strain effect on the suspended graphene by polarized Raman spectroscopy. In: Nanoscale Research Letters. 2012 ; Vol. 7. pp. 1-6.
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Observation of strain effect on the suspended graphene by polarized Raman spectroscopy. / Huang, Cheng Wen; Lin, Bing Jie; Lin, Hsing Ying; Huang, Chen Han; Shih, Fu Yu; Wang, Wei Hua; Liu, Chih Yi; Chui, Hsiang-Chen.

In: Nanoscale Research Letters, Vol. 7, 18.12.2012, p. 1-6.

Research output: Contribution to journalArticle

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AU - Chui, Hsiang-Chen

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