Chemically Modified Graphene Films with Tunable Negative Poisson’s Ratios

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dc.contributor.authorWen, Y.
dc.contributor.authorGao, E.
dc.contributor.authorHu, Zhenxing
dc.contributor.authorXu, Tingge
dc.contributor.authorLu, Hongbing
dc.contributor.authorXu, Z.
dc.contributor.authorLi, C.
dc.contributor.utdAuthorHu, Zhenxing
dc.contributor.utdAuthorXu, Tingge
dc.contributor.utdAuthorLu, Hongbing
dc.date.accessioned2020-03-31T20:17:05Z
dc.date.available2020-03-31T20:17:05Z
dc.date.issued2019-06-04
dc.descriptionIncludes supplementary material
dc.description.abstractGraphene-derived macroscopic assemblies feature hierarchical nano- and microstructures that provide numerous routes for surface and interfacial functionalization achieving unconventional material properties. We report that the microstructural hierarchy of pristine chemically modified graphene films, featuring wrinkles, delamination of close-packed laminates, their ordered and disordered stacks, renders remarkable negative Poisson’s ratios ranging from −0.25 to −0.55. The mechanism proposed is validated by the experimental characterization and theoretical analysis. Based on the understanding of microstructural origins, pre-strech is applied to endow chemically modified graphene films with controlled negative Poisson’s ratios. Modulating the wavy textures of the inter-connected network of close-packed laminates in the chemically modified graphene films also yields finely-tuned negative Poisson’s ratios. These findings offer the key insights into rational design of films constructed from two-dimensional materials with negative Poisson’s ratios and mechanomutable performance. © 2019, The Author(s).
dc.description.departmentErik Jonsson School of Engineering and Computer Science
dc.description.sponsorshipNational Natural Science Foundation of China (51673108 and 51433005) and National Key R&D Program of China (2016YFA0200202); National Natural Science Foundation of China through Grants 11825203 and 11472150; National Science Foundation CMMI-1636306, CMMI-1661246, and CMMI-1726435
dc.identifier.bibliographicCitationWen, Y., E. Gao, Z. Hu, T. Xu, et al. 2019. "Chemically modified graphene films with tunable negative Poisson’s ratios." Nature Communications 10: art. 2446, doi: 10.1038/s41467-019-10361-3
dc.identifier.issn2041-1723
dc.identifier.urihttp://dx.doi.org/10.1038/s41467-019-10361-3
dc.identifier.urihttps://hdl.handle.net/10735.1/7732
dc.identifier.volume10
dc.language.isoen
dc.publisherNature Publishing Group
dc.rightsCC BY 4.0 (Attribution)
dc.rights©2019 The Authors
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.source.journalNature Communications
dc.subjectFilms--Graphene
dc.subjectPoisson's ratio
dc.titleChemically Modified Graphene Films with Tunable Negative Poisson’s Ratios
dc.type.genrearticle

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