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Twisted Bi-layer graphene: Microscopic rainbows

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Campos-Delgado, J. Algara-Siller, G. Santos, C.N. Kaiser, U. Raskin, J.-P.

Blue, pink, and yellow colorations appear from twisted bi-layer graphene (tBLG) when transferred to a SiO2/Si substrate (SiO2 = 100 nm-thick). Raman and electron microscope studies reveal that these colorations appear for twist angles in the 9-15° range. Optical contrast simulations confirm that the observed colorations are related to the angle-dependent electronic properties of tBLG combined with the reflection that results from the layered structure tBLG/100 nm-thick SiO2/Si. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2013
Language Anglais
Journal information "Small" - Vol. 9, no. 19, p. 3247-3251 (2013)
Peer reviewed yes
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
e-issn 1613-6829
issn 1613-6810
Publication status Publié
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Bibliographic reference Campos-Delgado, J. ; Algara-Siller, G. ; Santos, C.N. ; Kaiser, U. ; Raskin, J.-P.. Twisted Bi-layer graphene: Microscopic rainbows. In: Small, Vol. 9, no. 19, p. 3247-3251 (2013)
Permanent URL http://hdl.handle.net/2078.1/160763