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Issue 105, 2016
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Direct evaluation of CVD multilayer graphene elastic properties

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The rolling of semiconductor thin films with graphene layers on top is carried out to integrate distinct material classes. Tubular structures obtained can span from the nanometer to the micrometer range, providing controlled and homogeneous curvature on few-layer CVD graphene systems. Scanning electron microscopy measurements reveal an increase in the tube radius for larger amounts of stacked/rolled graphene sheets. The relation between the retrieved radii for different layered configurations and total layer thickness is fitted with continuum elasticity theory, directly providing elastic parameters such as Young modulus and Poisson's ratio for few-layer graphene systems. X-ray diffraction and Raman spectroscopy evidence that surface modifications due to the transferring methods are negligible and that layer-to-layer registry (graphitization) is not observed. The concept of rolling up layered materials for direct evaluation of elastic properties can be extended to other two-dimensional systems.

Graphical abstract: Direct evaluation of CVD multilayer graphene elastic properties

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The article was received on 09 Sep 2016, accepted on 26 Oct 2016 and first published on 27 Oct 2016

Article type: Paper
DOI: 10.1039/C6RA22588H
Citation: RSC Adv., 2016,6, 103707-103713
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    Direct evaluation of CVD multilayer graphene elastic properties

    I. D. Barcelos, L. A. B. Marçal, Ch. Deneke, L. G. Moura, R. G. Lacerda and A. Malachias, RSC Adv., 2016, 6, 103707
    DOI: 10.1039/C6RA22588H

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