Journal article
Indentation of suspended two-dimensional solids: The signatures of geometrical and material nonlinearity
- Abstract:
- The material characterization of ultra-thin solid sheets, including two-dimensional materials like graphene, is often performed through indentation tests on a flake suspended over a hole in a substrate. While this ‘suspended indentation’ is a convenient means of measuring properties such as the stretching (two-dimensional) modulus of such materials, experiments on ostensibly similar systems have reported very different material properties. In this paper, we present a modelling study of this indentation process assuming elastic behaviour. In particular, we investigate the possibility that the reported differences may arise from different geometrical parameters and/or non-Hookean deformations, which lead to the system exploring nonlinearities with geometrical or material origins.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, 2.0MB, Terms of use)
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- Publisher copy:
- 10.1016/j.jmps.2020.104109
Authors
- Publisher:
- Elsevier
- Journal:
- Journal of the Mechanics and Physics of Solids More from this journal
- Volume:
- 144
- Article number:
- 104109
- Publication date:
- 2020-08-07
- Acceptance date:
- 2020-08-05
- DOI:
- ISSN:
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0022-5096
- Language:
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English
- Keywords:
- Pubs id:
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1123596
- Local pid:
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pubs:1123596
- Deposit date:
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2020-08-05
Terms of use
- Copyright holder:
- Elsevier Ltd
- Copyright date:
- 2020
- Rights statement:
- © 2020 Elsevier Ltd.
- Notes:
- This is the accepted manuscript version of the article. The final version is available online from Elsevier at https://doi.org/10.1016/j.jmps.2020.104109
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