The optical visibility of graphene: interference colors of ultrathin graphite on SiO(2)

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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Veröffentlicht in:	Nano letters 2007-09, Vol.7 (9), p.2707-2710
Hauptverfasser:	Roddaro, S, Pingue, P, Piazza, V, Pellegrini, V, Beltram, F
Format:	Artikel
Sprache:	eng
Schlagworte:	Colorimetry - methods Graphite - chemistry Macromolecular Substances - chemistry Materials Testing - methods Microscopy - methods Molecular Conformation Nanostructures - chemistry Nanostructures - ultrastructure Nanotechnology - methods Particle Size Refractometry - methods Silicon Dioxide - chemistry Surface Properties
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Beschreibung
Zusammenfassung:	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