Routes to rupture and folding of graphene on rough 6H-SiC(0001) and their identification

Temmen, Matthias; Ochedowski, Oliver; Bußmann, Benedict Kleine; Schleberger, M.; Reichling, Michael; Bollmann, Tjeerd Rogier Johannes

doi:10.3762/bjnano.4.69

Cited by 6 publications

(4 citation statements)

References 47 publications

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“…Determined in several experiments, the confined water film is found to have a height of typically 1.5 nm, where figure 1(a) is a representative example. The contrast in KPFM, shown in figure 1(c), is used to distinguish the thinnest sheet thicknesses from each other and from FLG by methods well established in the literature [29,30] and in agreement with our characterization by Raman microscopy. Figure 1(d) shows a histogram of the surface potential values taken from the area enclosed by the dotted line in figure 1(c).…”

Section: Methodssupporting

confidence: 74%

Hydration layers trapped between graphene and a hydrophilic substrate

et al. 2014

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Graphene is mechanically exfoliated on CaF 2 (111) under ambient conditions. We demonstrate the formation of a several monolayer thick hydration layer on the hydrophilic substrate and its response to annealing at temperatures up to 750 K in an ultra-high vacuum environment. Upon heating, water is released, however, it is impossible to remove the first layer. The initially homogeneous film separates into water-containing and water-free domains by two-dimensional Ostwald ripening. Upon severe heating, thick graphene multilayers undergo rupture, while nanoblisters confining sealed water appear on thinner sheets, capable of the storage and release of material. From modeling the dimensions of the nanoblisters, we estimate the graphene/CaF 2 (111) interfacial adhesion energy to be ± 0.33 0.13 − J m 2 , thereby viable for polymer-assisted transfer printing.

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Section: Methodssupporting

confidence: 74%

Hydration layers trapped between graphene and a hydrophilic substrate

et al. 2014

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“…This huge scientific and technological potential of folded graphene may however only be exploited if reliable methods for controlled folding are at hand. Folding of graphene has so far been achieved by ultrasound sonication [15], the use of chemicals [16], by using the tip of an atomic force microscope (AFM) [17,18], femto-second laser ablation [19], and swift heavy ion irradiation (SHI) [20,21]. Most of the aforementioned methods create foldings in a more or less random way with respect to size and orientation, as well as the number of foldings.…”

Section: Introductionmentioning

confidence: 99%

Nanostructuring graphene by dense electronic excitation

Ochedowski¹,

Lehtinen²,

Kaiser³

et al. 2015

Nanotechnology

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The ability to manufacture tailored graphene nanostructures is a key factor to fully exploit its enormous technological potential. We have investigated nanostructures created in graphene by swift heavy ion induced folding. For our experiments, single layers of graphene exfoliated on various substrates and freestanding graphene have been irradiated and analyzed by atomic force and high resolution transmission electron microscopy as well as Raman spectroscopy. We show that the dense electronic excitation in the wake of the traversing ion yields characteristic nanostructures each of which may be fabricated by choosing the proper irradiation conditions. These nanostructures include unique morphologies such as closed bilayer edges with a given chirality or nanopores within supported as well as freestanding graphene. The length and orientation of the nanopore, and thus of the associated closed bilayer edge, may be simply controlled by the direction of the incoming ion beam. In freestanding graphene, swift heavy ion irradiation induces extremely small openings, offering the possibility to perforate graphene membranes in a controlled way.

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“…Recently, the magnetic anisotropy has been observed in single or bilayer graphene [11], graphene oxides [12], and in graphene/magnetic heterostructures [13].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Anisotropy in Doped Graphene with Rashba Spin-Orbit Interaction

Inglot

Dugaev

2019

Acta Phys. Pol. A

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We present our calculations of on-site magnetic anisotropy (MA) in graphene with magnetic atoms. We assume that the graphene layer is placed on a substrate, which generates the homogeneous Rashba spin-orbit field. The resonant state in the presence of Rashba spin-orbit interaction is calculated for two possible orientations of the magnetic moment namely perpendicular, Sz = 1, and parallel, Sz = 0, to the graphene plane. The magnetic anisotropy is calculated as a difference between the energies of these states and presented as a function of impurity potential g0 and magnitude of the Rashba spin-orbit coupling α.

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Routes to rupture and folding of graphene on rough 6H-SiC(0001) and their identification

Cited by 6 publications

References 47 publications

Hydration layers trapped between graphene and a hydrophilic substrate

Hydration layers trapped between graphene and a hydrophilic substrate

Nanostructuring graphene by dense electronic excitation

Magnetic Anisotropy in Doped Graphene with Rashba Spin-Orbit Interaction

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