physica status solidi (a)

Cover image for Vol. 213 Issue 9

Editor: Stefan Hildebrandt (Editor-in-Chief), Sabine Bahrs (Deputy Editor)

Online ISSN: 1862-6319

Associated Title(s): physica status solidi (b), physica status solidi (c), physica status solidi (RRL) - Rapid Research Letters

206_06b/2009Back Cover: Phys. Status Solidi A 206/6

The back cover refers to this issue Editor's Choice article (Ursel Bangert and co-workers, pp. 1117–1122). The paper introduces a novel method of imaging ripples in graphene, which does not employ defocusing methods and allows the atomic lattice to be clearly visible throughout. Suspended graphene is in fact not perfectly flat, but rather exhibits microscopic corrugations (ripples) which can be of not only dynamical, through flexural phonons, but also static nature. However, only large-scale ripples (>15 nm) could so far be visualized directly, whereas ripples on a nanoscopic scale (<15 nm) were only identified from the broadening of diffraction spots, which prevents static and dynamic bending from being distinguished. Using their new method, the authors in the paper describe rippling in suspended graphene to be facilitated by point defects and not representing permanent deformation, but rather dynamic flexing, aided by redistribution of the defects (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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