The Optical Visibility of Graphene:  Interference Colors of Ultrathin Graphite on SiO2

Monatomic layers of graphite are emerging as building blocks for novel optoelectronic devices. Experimental studies on a single graphite layer (graphene) are today possible since very thin graphite can be identified on a dielectric substrate using a normal optical microscope. We investigate the mech...

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Bibliographic Details
Published in:Nano letters 2007-09, Vol.7 (9), p.2707-2710
Main Authors: Roddaro, S, Pingue, P, Piazza, V, Pellegrini, V, Beltram, F
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
Materials science
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of bulk materials and thin films
Physics
Specific materials
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Summary:Monatomic layers of graphite are emerging as building blocks for novel optoelectronic devices. Experimental studies on a single graphite layer (graphene) are today possible since very thin graphite can be identified on a dielectric substrate using a normal optical microscope. We investigate the mechanism behind the strong visibility of graphite, and we discuss the importance of substrates and of the microscope objective used for the imaging.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl071158l