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Folding Graphene with Swift Heavy Ions

Published online by Cambridge University Press:  11 August 2011

Sevilay Akcöltekin
Affiliation:
University of Duisburg-Essen, 47048 Duisburg, Germany.
Hanna Bukowska
Affiliation:
University of Duisburg-Essen, 47048 Duisburg, Germany.
Ender Akcöltekin
Affiliation:
University of Duisburg-Essen, 47048 Duisburg, Germany.
Henning Lebius
Affiliation:
CIMAP (CEA-CNRS-ENSICAEN-UCBN), 14070 Caen Cedex 5, France.
Marika Schleberger
Affiliation:
University of Duisburg-Essen, 47048 Duisburg, Germany.
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Abstract

Swift heavy ion induced modifications on graphene were investigated by means of atomic force microscopy and Raman spectroscopy. For the experiment graphene was exfoliated onto different substrates (SrTiO3 (100), TiO2(100), Al2O3(1102) and 90 nm SiO2/Si) by the standard technique. After irradiation with heavy ions of 93 MeV kinetic energy and under glancing angles of incidence, characteristic folding structures are observed. The folding patterns on crystalline substrates are generally larger and are created with a higher efficiency than on the amorphous SiO2. This difference is attributed to the relatively large distance between graphene and SiO2 of d ≈ 1 nm.

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Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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