Formation of wrinkles on graphene induced by nanoparticles: atomic force microscopy study

0451699 - FZÚ 2016 RIV US eng J - Journal Article
Pacáková, Barbara - Vejpravová, Jana - Repko, A. - Mantlíková, Alice - Kalbáč, Martin
Formation of wrinkles on graphene induced by nanoparticles: atomic force microscopy study.
Carbon. Roč. 95, Dec (2015), s. 573-579. ISSN 0008-6223. E-ISSN 1873-3891
R&D Projects: GA ČR(CZ) GA15-01953S; GA MŠMT 7E12057
EU Projects: European Commission(XE) 262943 - MULTIFUN
Institutional support: RVO:68378271 ; RVO:61388955
Keywords : graphene * monodisperse nanoparticles * wrinkles * AFM
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 6.198, year: 2015

Wrinkles in monolayer graphene (GN) affect the GN electronic and transport properties. Defined network of wrinkles can be reached by placing the GN on the substrate decorated with the nanoparticles (NPs). In order to explain mechanism behind the topographically induced changes of the GN electronic structure and to correlate it with the wrinkling, correct description of the GN morphology is of high demand. We demonstrate here how to determine from the atomic force microscopy (AFM) images whether the GN is in the contact with the substrate or it is delaminated, how is the wrinkling of the layer connected with the density of the NPs and whether there is the preferential orientation of wrinkles or not. The study was done on the samples of the GN on the top of SiO2/Si substrate decorated with the metal-oxide NPs of nominal diameter of the 6 and 10 nm. The projected area of wrinkles was increasing linearly with the increasing NP density, independently on the NP diameter.
Permanent Link: http://hdl.handle.net/11104/0252827