On the roughness of single- and bi-layer graphene membranes

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We present a detailed transmission electron microscopy and electron diffraction study of the thinnest possible membrane, a single layer of carbon atoms suspended in vacuum and attached only at its edges. Membranes consisting of two graphene layers are also reported. We find that the membranes exhibit an apparently random spontaneous curvature that is strongest in single-layer membranes. A direct visualization of the roughness is presented for two-layer membranes where we used the variation of diffracted intensities with the local orientation of the membrane.
14 pages, 8 figures

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Mesoscale and Nanoscale Physics, Materials Science, Soft Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/137462

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0703033
 http://arxiv.org/abs/cond-mat/0703033
 Solid State Communications 143 (2007) 101-109
 doi:10.1016/j.ssc.2007.02.047

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arXiv