Tailoring Graphene to Achieve Negative Poisson's Ratio Properties

descriptionPublicationkeyboard_double_arrow_right Article 15 Dec 2014 Italy English Publisher:WileyJournal:Advanced Materials, volume 27, pages 1,455-1,459 (issn: 0935-9648, eissn: 1521-4095,

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Authors: Grima J. N.; Winczewski S.; Mizzi L.; Grech M. C.; Cauchi R.; Gatt R.; Attard D.; +2 Authors

doi: 10.1002/adma.201404106

pmid: 25504060

handle: 11380/1239858

Tailoring Graphene to Achieve Negative Poisson's Ratio Properties

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Abstract

Graphene can be made auxetic through the introduction of vacancy defects. This results in the thinnest negative Poisson's ratio material at ambient conditions known so far, an effect achieved via a nanoscale de-wrinkling mechanism that mimics the behavior at the macroscale exhibited by a crumpled sheet of paper when stretched.

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Keywords

Poisson's ratio; auxetic; graphene; molecular dynamics; vacancy defects

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