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Phonon softening and crystallographic orientation of strained graphene studied by Raman spectroscopy

Open access
Huang, Mingyuan, Yan, Hugen, Chen, Changyao, Song, Daohua, Heinz, Tony F., Hone, James·2009·Proceedings of the National Academy of Sciences

Abstract

We present a systematic study of the Raman spectra of optical phonons in graphene monolayers under tunable uniaxial tensile stress. Both the G and 2D bands exhibit significant red shifts. The G band splits into 2 distinct subbands (G + , G − ) because of the strain-induced symmetry breaking. Raman scattering from the G + and G − bands shows a distinctive polarization dependence that reflects the angle between the axis of the stress and the underlying graphene crystal axes. Polarized Raman spectroscopy therefore constitutes a purely optical method for the determination of the crystallographic orientation of graphene.

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Metadata

Authors
Huang, M., Yan, H., Chen, C., Song, D., Heinz, T. F., & Hone, J.
Venue
Proceedings of the National Academy of Sciences
Published
2009-05-05
Volume
106
Issue
18
Pages
7304-7308
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2138931463
Cited by
661
References
4
FWCI
23.93
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Phonon softening and crystallographic orientation of strained graphene studied by Raman spectroscopy. https://app.cochat.ai/papers/10.1073/pnas.0811754106
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Huang, M., Yan, H., Chen, C., Song, D., Heinz, T. F., & Hone, J. (2009). Phonon softening and crystallographic orientation of strained graphene studied by Raman spectroscopy. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0811754106

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.