Nanomechanics of few-layer materials: do individual layers slide upon folding?

  1. Ronaldo J. C. BatistaORCID Logo,
  2. Rafael F. Dias,
  3. Ana P. M. BarbozaORCID Logo,
  4. Alan B. de Oliveira,
  5. Taise M. ManhaboscoORCID Logo,
  6. Thiago R. Gomes-Silva,
  7. Andreij C. Gadellha,
  8. Cassiano RabeloORCID Logo,
  9. Luiz G. L. Cançado,
  10. Ado JorioORCID Logo,
  11. Hélio Chacham and
  12. Bernardo R. A. NevesORCID Logo

Submitting author affiliation: Universidade Federal de Ouro Preto, Ouro Preto, Brazil

Beilstein Arch. 2020, 202091. https://doi.org/10.3762/bxiv.2020.91.v1

Published 03 Aug 2020

  • Preprint

Abstract

Folds naturally appear on nanometrically thin (also called 2D) materials after exfoliation, eventually creating folded edges across the resulting flakes. In the present work, we investigate the adhesion and flexural properties of single and multilayered 2D materials upon folding. This is accomplished by measuring and modeling mechanical properties of folded edges, which allow the experimental determination of the scaling for the bending stiffness (κ) of a multilayered 2D material with its number of layers (n). In the case of talc, we obtain κ proportional to n3 for n ≥ 5, establishing that there is no interlayer sliding upon folding, at least in this thickness range. Such a result, if applicable to other materials, would imply that layers in folds might be either compressed (at the inner part of the fold) or stretched (at its outer part), leading to changes in their vibrational properties relative to a flat flake. This hypothesis was confirmed by near-field tip-enhanced Raman spectroscopy of a multilayer graphene fold.

Keywords: atomic force microscopy (AFM); Raman spectroscopy; nanostructured materials; analytical methods; molecular dynamics (MD)

Supporting Information

Format: ZIP Size: 1.4 MB   Download

How to Cite

When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Batista, R. J. C.; Dias, R. F.; Barboza, A. P. M.; de Oliveira, A. B.; Manhabosco, T. M.; Gomes-Silva, T. R.; Gadellha, A. C.; Rabelo, C.; Cançado, L. G. L.; Jorio, A.; Chacham, H.; Neves, B. R. A. Beilstein Arch. 2020, 202091. doi:10.3762/bxiv.2020.91.v1

Download Citation
Download RIS (Reference Manager) Download BIB (BIBTEX)

© 2020 Batista et al.; licensee Beilstein-Institut.
This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited.
The license is subject to the Beilstein Archives terms and conditions: (https://www.beilstein-archives.org/xiv/terms)

Other Beilstein-Institut Open Science Activities

Logo
Logo
Logo
Symposia