Document Detail


Rayleigh imaging of graphene and graphene layers.
MedLine Citation:
PMID:  17713959     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
C Casiraghi; A Hartschuh; E Lidorikis; H Qian; H Harutyunyan; T Gokus; K S Novoselov; A C Ferrari
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-08-22
Journal Detail:
Title:  Nano letters     Volume:  7     ISSN:  1530-6984     ISO Abbreviation:  Nano Lett.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-09-12     Completed Date:  2007-11-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2711-7     Citation Subset:  IM    
Affiliation:
Cambridge University, Engineering Department, Cambridge, United Kingdom.
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MeSH Terms
Descriptor/Qualifier:
Graphite / chemistry*
Macromolecular Substances / chemistry
Materials Testing / methods*
Microscopy / methods*
Molecular Conformation
Nanostructures / chemistry*,  ultrastructure*
Nanotechnology / methods*
Particle Size
Refractometry / methods*
Surface Properties
Chemical
Reg. No./Substance:
0/Macromolecular Substances; 7782-42-5/Graphite

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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