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The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Uniaxial Strain on Graphene: Raman Spectroscopy Study and Band-Gap Opening

Ni, Zhen Hua, Yu, Ting, Lu, Yun Hao, Wang, Ying Ying, Feng, Yuan Ping, Shen, Ze Xiang·2008·ACS Nano

Abstract

Graphene was deposited on a transparent and flexible substrate, and tensile strain up to approximately 0.8% was loaded by stretching the substrate in one direction. Raman spectra of strained graphene show significant red shifts of 2D and G band (-27.8 and -14.2 cm(-1) per 1% strain, respectively) because of the elongation of the carbon-carbon bonds. This indicates that uniaxial strain has been successfully applied on graphene. We also proposed that, by applying uniaxial strain on graphene, tunable band gap at K point can be realized. First-principle calculations predicted a band-gap opening of approximately 300 meV for graphene under 1% uniaxial tensile strain. The strained graphene provides an alternative way to experimentally tune the band gap of graphene, which would be more efficient and more controllable than other methods that are used to open the band gap in graphene. Moreover, our results suggest that the flexible substrate is ready for such a strain process, and Raman spectroscopy can be used as an ultrasensitive method to determine the strain.

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Metadata

Authors
Ni, Z. H., Yu, T., Lu, Y. H., Wang, Y. Y., Feng, Y. P., & Shen, Z. X.
Venue
ACS Nano
Published
2008-10-30
Volume
2
Issue
11
Pages
2301-2305
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2093603993
Cited by
1,627
References
4
FWCI
25.43
Type
journal article
Language
en
Open access
closed

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