Large-area and clean graphene transfer on gold-nanopyramid-structured substrates: implications for surface-enhanced Raman scattering detection

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dc.contributor.authorWu, Heping
dc.contributor.authorNiu, Gang
dc.contributor.authorRen, Wei
dc.contributor.authorYang, Zhugen
dc.contributor.authorXu, Qihang
dc.contributor.authorDai, Liyan
dc.contributor.authorJiang, Luyue
dc.contributor.authorZhai, Shijie
dc.contributor.authorZhao, Jinyan
dc.contributor.authorZhang, Nan
dc.contributor.authorZhao, Libo
dc.contributor.authorJiang, Zhuangde
dc.contributor.authorZhao, Gang
dc.date.accessioned2022-03-24T15:01:32Z
dc.date.available2022-03-24T15:01:32Z
dc.date.issued2022-03-16
dc.description.abstractThe transfer of large-area and clean graphene to arbitrary substrates, especially to those with raised nanostructures, represents a great challenge. Polymer-based supporting layers generally lead to organic residues, while graphene transfer using alternative supporting materials like paraffin suffers from breaking and thus limits the transfer area. We demonstrated an improved poly(methyl methacrylate) (PMMA)/paraffin double layer, enabling the large-area transfer of graphene with high cleanliness and high coverage (81%) onto gold nanopyramid (AuNP)-structured substrates. The impact of supporting layers including single PMMA or paraffin and mixed PMMA/paraffin was clarified. The properties of graphene on AuNPs were theoretically and experimentally examined in detail. Raman spectra show a polarization-dependent D peak due to the folding of large-curvature graphene. The graphene on AuNPs shows a slightly tensile strain and provides extra surface-enhanced Raman scattering (SERS) with an enhancement factor of ∼20 times. These findings open a pathway to extend the applications of transferred graphene on raised nanostructures in many fields, such as SERS detection, catalysis, biosensors, light-emitting diodes, solar cells, and advanced transparent conductors.en_UK
dc.identifier.citationWu H, Niu G, Ren W, et al., (2022) Large-area and clean graphene transfer on gold-nanopyramid-structured substrates: implications for surface-enhanced Raman scattering detection, ACS Applied Nano Materials, Volume 5, Issue 3, March 2022, pp. 3878-3888en_UK
dc.identifier.issn2574-0970
dc.identifier.urihttps://doi.org/10.1021/acsanm.1c04491
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17681
dc.language.isoenen_UK
dc.publisherACSen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectgraphene transferen_UK
dc.subjectPMMA/paraffinen_UK
dc.subjectgold nanopyramiden_UK
dc.subjectRaman spectroscopyen_UK
dc.subjectpolarization-dependenten_UK
dc.subjecttensile strainen_UK
dc.titleLarge-area and clean graphene transfer on gold-nanopyramid-structured substrates: implications for surface-enhanced Raman scattering detectionen_UK
dc.typeArticleen_UK

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