Nucleation and growth of nickel nanoclusters on graphene Moiré on Rh(111)

Sicot, Muriel; Bouvron, Samuel; Zander, Ole; Rüdiger, Ulrich; Dedkov, Yuriy; Fonin, Mikhail

doi:10.1063/1.3341176

Cited by 130 publications

(139 citation statements)

References 22 publications

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“…1b. For monolayer graphene on a Rh(111) surface, the lattice mismatch between graphene (0.246 nm) and Rh(111) (0.269 nm) leads to hexagonal moiré superstructures with the expected periodicity approximately about 2.9 nm resulted from a 12C/11Rh coincidence lattice [39][40][41] ( Supplementary Fig. S1, the characteristic of the moiré superstructures is distinct from that shown in Fig.…”

Section: Resultsmentioning

confidence: 89%

Strain and curvature induced evolution of electronic band structures in twisted graphene bilayer

et al. 2013

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It is well established that strain and geometry could affect the band structure of graphene monolayer dramatically. Here we study the evolution of local electronic properties of a twisted graphene bilayer induced by a strain and a high curvature, which are found to strongly affect the local band structures of the twisted graphene bilayer. The energy difference of the two low-energy van Hove singularities decreases with increasing lattice deformation and the states condensed into well-defined pseudo-Landau levels, which mimic the quantization of massive chiral fermions in a magnetic field of about 100 T, along a graphene wrinkle. The joint effect of strain and out-of-plane distortion in the graphene wrinkle also results in a valley polarization with a significant gap. These results suggest that strained graphene bilayer could be an ideal platform to realize the high-temperature zero-field quantum valley Hall effect.

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Section: Resultsmentioning

confidence: 89%

Strain and curvature induced evolution of electronic band structures in twisted graphene bilayer

et al. 2013

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“…Graphene may o↵er a high degree of control over the arrangement and separation of nanoclusters, allowing templated growth of systems with specific cluster topologies and electronic structures. [6][7][8][9][10][11][12][13][14][15] The electronic interactions between graphene and the guest material play a central role in the early growth process. 16,17 A Monte Carlo study conducted by Guo et al 12 on ZnO nanoparticle growth on graphene showed that the deformation of Zn clusters and layering on the graphene provides suitable nucleation sites governed mainly by Zncarbon bond formation.…”

Section: Introductionmentioning

confidence: 99%

Growth of metalloid aluminum clusters on graphene vacancies

Alnemrat

Mayo

DeCarlo

et al. 2016

The Journal of Chemical Physics

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Ab initio simulations are used to show that graphene vacancy sites may o↵er a means of templated growth of metalloid aluminum clusters from their monohalide precursors. We present density functional theory and ab initio molecular dynamics simulations of the aluminum halide AlCl interacting with a graphene surface. Unlike a bare Al adatom, AlCl physisorbs weakly on vacancy-free graphene with little charge transfer and no hybridization with carbon orbitals. The barrier for di↵usion of AlCl along the surface is negligible. Covalent bonding is seen only with vacancies and results in strong chemisorption and considerable distortion of the nearby lattice. Car-Parrinello molecular dynamics simulations of AlCl liquid around a graphene single vacancy show spontaneous metalloid cluster growth via a process of repeated insertion reactions. This suggests a means of templated cluster nucleation and growth on a carbon substrate and provides some confirmation for the role of a trivalent aluminum species in nucleating a ligated metalloid cluster from AlCl and AlBr solutions. C 2016 AIP Publishing LLC. [http://dx

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“…3 The synthesis of graphene can be accomplished by two complementary approaches based on the high-temperature pyrolysis of small hydrocarbons on TM surfaces: temperatureprogrammed growth (TPG) and chemical vapor deposition (CVD), as extensively demonstrated for (we restrict our discussion below to the 4d and 5d TMs): Ru(0001), [4][5][6] Rh(111), 7,8 Pd(111), 9 Ir(111), [10][11][12] and Pt(111). 13,14 Both synthesis methods lead to single-layer graphene characterized by a Moir e superstructure, irrespective of the carbon source (ethene, propene, or benzene) or of the TM support.…”

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confidence: 99%

Size-Selective Carbon Nanoclusters as Precursors to the Growth of Epitaxial Graphene

Wang

Ma²,

Caffio³

et al. 2011

Nano Lett.

140

200

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The nucleation and growth mechanisms of graphene on Rh(111) via temperature-programmed growth of C 2 H 4 are studied by scanning tunneling microscopy and spectroscopy, and by density functional theory calculations. By combining our experimental and firstprinciples approaches, we show that carbon nanoislands form in the initial stages of graphene growth, possessing an exclusive size of seven honeycomb carbon units (hereafter labeled as 7C 6 ). These clusters adopt a domelike hexagonal shape indicating that bonding to the substrate is localized on the peripheral C atoms. Smoluchowski ripening is identified as the dominant mechanism leading to the formation of graphene, with the size-selective carbon islands as precursors. Control experiments and calculations, whereby coronene molecules, the hydrogenated analogues of 7C 6 , are deposited on Rh(111), provide an unambiguous structural and chemical identification of the 7C 6 building blocks.

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Nucleation and growth of nickel nanoclusters on graphene Moiré on Rh(111)

Cited by 130 publications

References 22 publications

Strain and curvature induced evolution of electronic band structures in twisted graphene bilayer

Strain and curvature induced evolution of electronic band structures in twisted graphene bilayer

Growth of metalloid aluminum clusters on graphene vacancies

Size-Selective Carbon Nanoclusters as Precursors to the Growth of Epitaxial Graphene

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