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Graphene wrinkling induced by monodisperse nanoparticles: facile control and quantification.

ABSTRACT: Controlled wrinkling of single-layer graphene (1-LG) at nanometer scale was achieved by introducing monodisperse nanoparticles (NPs), with size comparable to the strain coherence length, underneath the 1-LG. Typical fingerprint of the delaminated fraction is identified as substantial contribution to the principal Raman modes of the 1-LG (G and G'). Correlation analysis of the Raman shift of the G and G' modes clearly resolved the 1-LG in contact and delaminated from the substrate, respectively. Intensity of Raman features of the delaminated 1-LG increases linearly with the amount of the wrinkles, as determined by advanced processing of atomic force microscopy data. Our study thus offers universal approach for both fine tuning and facile quantification of the graphene topography up to ~60% of wrinkling.

SUBMITTER: Vejpravova J

PROVIDER: S-EPMC4632107 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Graphene wrinkling induced by monodisperse nanoparticles: facile control and quantification.

Vejpravova Jana J Pacakova Barbara B Endres Jan J Mantlikova Alice A Verhagen Tim T Vales Vaclav V Frank Otakar O Kalbac Martin M

Scientific reports 20151104

Controlled wrinkling of single-layer graphene (1-LG) at nanometer scale was achieved by introducing monodisperse nanoparticles (NPs), with size comparable to the strain coherence length, underneath the 1-LG. Typical fingerprint of the delaminated fraction is identified as substantial contribution to the principal Raman modes of the 1-LG (G and G'). Correlation analysis of the Raman shift of the G and G' modes clearly resolved the 1-LG in contact and delaminated from the substrate, respectively. ...[more]

PMID: 26530787

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