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Rayleigh Imaging of Graphene and Graphene Layers

Open access
Casiraghi, C., Hartschuh, A., Lidorikis, E., Qian, H., Harutyunyan, H., Gokus, T., Novoselov, K. S., Ferrari, A. C.·2007·Nano Letters

Abstract

We investigate graphene and graphene layers on different substrates by monochromatic and white-light confocal Rayleigh scattering microscopy. The image contrast depends sensitively on the dielectric properties of the sample as well as the substrate geometry and can be described quantitatively using the complex refractive index of bulk graphite. For a few layers (<6), the monochromatic contrast increases linearly with thickness. The data can be adequately understood by considering the samples behaving as a superposition of single sheets that act as independent two-dimensional electron gases. Thus, Rayleigh imaging is a general, simple, and quick tool to identify graphene layers, which is readily combined with Raman scattering, that provides structural identification.

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Metadata

Authors
Casiraghi, C., Hartschuh, A., Lidorikis, E., Qian, H., Harutyunyan, H., Gokus, T., Novoselov, K. S., & Ferrari, A. C.
Venue
Nano Letters
Published
2007-08-22
Volume
7
Issue
9
Pages
2711-2717
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2159415234
Cited by
629
References
8
FWCI
14.99
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Rayleigh Imaging of Graphene and Graphene Layers. https://app.cochat.ai/papers/10.1021/nl071168m
The paper
Casiraghi, C., Hartschuh, A., Lidorikis, E., Qian, H., Harutyunyan, H., Gokus, T., Novoselov, K. S., & Ferrari, A. C. (2007). Rayleigh Imaging of Graphene and Graphene Layers. Nano Letters. https://doi.org/10.1021/nl071168m

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