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dc.contributor.authorDUESBERG, GEORGen
dc.contributor.authorCOLEMAN, JONATHANen
dc.contributor.authorDONEGAN, JOHNen
dc.contributor.authorNICOLOSI, VALERIAen
dc.contributor.authorMCEVOY, NIALLen
dc.contributor.authorMCCLOSKEY, DAVIDen
dc.date.accessioned2015-05-19T12:35:21Z
dc.date.available2015-05-19T12:35:21Z
dc.date.issued2014en
dc.date.submitted2014en
dc.identifier.citationBackes, C, Smith, RJ, McEvoy, N, Berner, NC, McCloskey, D, Nerl, HC, O'Neill, A, King, PJ, Higgins, T, Hanlon, D, Scheuschner, N, Maultzsch, J, Houben, L, Duesberg, GS, Donegan, JF, Nicolosi, V, Coleman, JN, Edge and confinement effects allow in situ measurement of size and thickness of liquid-exfoliated nanosheets, Nature Communications, 5, 2014, 4576-en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/73942
dc.descriptionPUBLISHEDen
dc.description.abstractTwo-dimensional nanomaterials such as MoS2 are of great interest both because of their novel physical properties and their applications potential. Liquid exfoliation, an important production method, is limited by our inability to quickly and easily measure nanosheet size, thickness or concentration. Herein, we demonstrate a method to simultaneously determine mean values of these properties from an optical extinction spectrum measured on a liquid dispersion of MoS2 nanosheets. The concentration measurement is based on the size-independence of the low-wavelength scattering coefficient while the size and thickness measurements rely on the effect on edges and quantum confinement on the optical spectra. The resultant controllability of concentration, size and thickness facilitates the preparation of dispersions with pre-determined properties such as high monolayer-content, leading to first measurement of direct-gap MoS2 luminescence in liquid suspensions. These techniques are general and can be applied to a range of 2-dimensional materials including WS2, MoSe2 and WSe2.en
dc.description.sponsorshipThe research leading to these results has received funding from the European Union Seventh Framework Programme under grant agreement n°604391 Graphene Flagship. In addition, JNC acknowledges the European Research Council grant SEMANTICS and the SFI grant number 17 11/PI/1087 for financial support. CB acknowledges the German research foundation DFG (BA 4856/1-1). NS and JM acknowledge support from DFG SPP 1459 (MA 4079/7-1) and European Research Council (grant number 259286). GSD and NB acknowledge SFI for PI_10/IN.1/I3030. NMcE thanks FP7-2010-PPP Green Cars Electrograph (266391).en
dc.format.extent4576en
dc.language.isoenen
dc.relation.ispartofseriesNature Communicationsen
dc.relation.ispartofseries5en
dc.rightsYen
dc.subjectMoS2 nanosheetsen
dc.subject.lcshMoS2 nanosheetsen
dc.titleEdge and confinement effects allow in situ measurement of size and thickness of liquid-exfoliated nanosheetsen
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/duesbergen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/colemajen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jdoneganen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/dmcclosken
dc.identifier.peoplefinderurlhttp://people.tcd.ie/nicoloven
dc.identifier.peoplefinderurlhttp://people.tcd.ie/mcevoynien
dc.identifier.rssinternalid97325en
dc.identifier.doihttp://dx.doi.org/10.1038/ncomms5576en
dc.rights.ecaccessrightsopenAccess
dc.contributor.sponsorGrantNumberPI_10/IN.1/I3030en


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