Graphene wrinkling induced by monodisperse nanoparticles: facile control and quantification

0451164 - FZÚ 2016 RIV GB eng J - Journal Article
Vejpravová, Jana - Pacáková, Barbara - Endres, J. - Mantlíková, Alice - Verhagen, Timotheus - Valeš, Václav - Frank, Otakar - Kalbáč, Martin
Graphene wrinkling induced by monodisperse nanoparticles: facile control and quantification.
Scientific Reports. Roč. 5, Nov (2015), s. 15061. ISSN 2045-2322. E-ISSN 2045-2322
R&D Projects: GA ČR(CZ) GA15-01953S; GA MŠMT 7E12057; GA MŠMT LL1301
EU Projects: European Commission(XE) 262943 - MULTIFUN
Institutional support: RVO:68378271 ; RVO:61388955
Keywords : graphene * wrinkles * nanoparticles * strain * doping
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 5.228, year: 2015

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, 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.
Permanent Link: http://hdl.handle.net/11104/0252364