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dc.contributor.authorBera, Bijoyendra
dc.contributor.authorShahidzadeh, Noushine
dc.contributor.authorMishra, Himanshu
dc.contributor.authorBelyaeva, Liubov A.
dc.contributor.authorSchneider, Grégory F.
dc.contributor.authorBonn, Daniel
dc.date.accessioned2018-04-19T10:45:32Z
dc.date.available2018-04-19T10:45:32Z
dc.date.issued2018-04-12
dc.identifier.citationBera B, Shahidzadeh N, Mishra H, Belyaeva LA, Schneider GF, et al. (2018) Wetting of water on graphene nanopowders of different thicknesses. Applied Physics Letters 112: 151606. Available: http://dx.doi.org/10.1063/1.5022570.
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.doi10.1063/1.5022570
dc.identifier.urihttp://hdl.handle.net/10754/627573
dc.description.abstractWe study the wetting of graphene nanopowders by measuring the water adsorption in nanopowder flakes of different flake thicknesses. Chemical analysis shows that the graphene flakes, especially the thin ones, might exist in the partially oxidized state. We observe that the thinnest graphene nanopowder flakes do not adsorb water at all, independent of the relative humidity. Thicker flakes, on the other hand, do adsorb an increasing amount of water with increasing humidity. This allows us to assess their wetting behavior which is actually the result of the competition between the adhesive interactions of water and graphene and the cohesive interactions of water. Explicit calculation of these contributions from the van der Waals interactions confirms that the adhesive interactions between very thin flakes of graphene oxide and water are extremely weak, which makes the flakes superhydrophobic. “Liquid marble” tests with graphene nanopowder flakes confirm the superhydrophobicity. This shows that the origin of the much debated “wetting transparency” of graphene is due to the fact that a single graphene or graphene oxide layer does not contribute significantly to the adhesion between a wetting phase and the substrate.
dc.publisherAIP Publishing
dc.relation.urlhttps://aip.scitation.org/doi/abs/10.1063/1.5022570
dc.rightsAll article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectHygrometry
dc.subjectIntermolecular forces
dc.subjectMaterials treatment
dc.subjectChemical analysis
dc.subjectNanomaterials
dc.subjectGraphene
dc.subjectChemical compounds
dc.subjectCarbon based materials
dc.subjectSurface dynamics
dc.titleWetting of water on graphene nanopowders of different thicknesses
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalApplied Physics Letters
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionSoft Matter Group, Institute of Physics (IoP), Science Park 904, 1098 XH Amsterdam, The Netherlands
dc.contributor.institutionInstitute of Chemistry, Supramolecular & Biomaterials Chemistry, Leiden University, 2333 CC Leiden, The Netherlands
kaust.personMishra, Himanshu
refterms.dateFOA2018-06-14T05:54:30Z
dc.date.published-online2018-04-12
dc.date.published-print2018-04-09


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All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).