Diamondlike carbon films obtained by low energy cluster beam deposition: Evidence of a memory effect of the properties of free carbon clusters

Paillard, Vincent; Melinon, P.; Dupuis, V.; Pérez, Joseph; Pérez, A.; Champagnon, B.

doi:10.1103/physrevlett.71.4170

Cited by 126 publications

(71 citation statements)

References 20 publications

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“…3 suggests that the films are porous [58,67], which is interesting to keep one of the peculiarities of the clusters : their high surface/volume ratio which affects all the physical (structural, electronic) properties as well as the chemical reactivity (catalysis). Concerning deposition of carbon clusters, experiments [13,20] as well as simulations [68] have shown that the carbon clusters preserve their identity in the thick film. Another interesting type of nanostructured film grown by cluster deposition is the growth of cermets by combining a cluster beam with an atomic beam of the encapsulating material [69].…”

Section: Low Energy Clustersmentioning

confidence: 99%

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Growth of nanostructures by cluster deposition: Experiments and simple models

1999

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This paper presents a comprehensive analysis of simple models useful to analyze the growth of nanostructures obtained by cluster deposition. After detailing the potential interest of nanostructures, I extensively study the first stages of growth (the submonolayer regime) by kinetic MonteCarlo simulations. These simulations are performed in a wide variety of experimental situations : complete condensation, growth with reevaporation, nucleation on defects, total or null clustercluster coalescence . . . . The main scope of the paper is to help experimentalists analyzing their data to deduce which of those processes are important and to quantify them. A software including all these simulation programs is available at no cost on request to the author. I carefully discuss experiments of growth from cluster beams and show how the mobility of the clusters on the surface can be measured : surprisingly high values are found. An important issue for future technological applications of cluster deposition is the relation between the size of the incident clusters and the size of the islands obtained on the substrate. An approximate formula which gives the ratio of the two sizes as a function of the melting temperature of the material deposited is given. Finally, I study the atomic mechanisms which can explain the diffusion of the clusters on a substrate and the result of their mutual interaction (simple juxtaposition, partial or total coalescence . . . ).

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Section: Low Energy Clustersmentioning

confidence: 99%

“…By changing the size of the incident clusters one can change the growth mechanisms [18,19] and the characteristics of the materials. For example, it has been shown that by changing the mean size of the incident carbon clusters, one can modify the properties of the carbon film, from graphitic to diamond-like [20].…”

Section: Introductionmentioning

confidence: 99%

Growth of nanostructures by cluster deposition: Experiments and simple models

1999

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“…It has been shown, for instance, that by changing the mean size of the incident carbon clusters, it was possible to modify the structure of the resulting carbon film from graphitic to diamondlike. 10 This however requires that sufficient control over the cluster deposition and subsequent growth process be achieved. 11,12 Diffusion evidently plays a central role in the fabrication of thin films and self-organized structures by cluster deposition.…”

Section: Introductionmentioning

confidence: 99%

“…It has recently been demonstrated [10][11][12] that depositing clusters (rather than single atoms) on surfaces allow the fabrication of interesting nanostructured materials whose properties can be tailored to specific technological applications, e.g., micro-electronic, optoelectronic, and magnetic devices. 13 If single-atom deposition is used, the nanostructures have to be grown directly on the substrate through diffusion and agregation, which depends in a detailed (and in general very complicated) manner on the interactions between surface atoms and adatoms.…”

Section: Introductionmentioning

confidence: 99%

Diffusion of gold nanoclusters on graphite

et al. 2000

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We present a detailed molecular-dynamics study of the diffusion and coalescence of large (249-atom) gold clusters on graphite surfaces. The diffusivity of monoclusters is found to be comparable to that for single adatoms. Likewise, and even more important, cluster dimers are also found to diffuse at a rate which is comparable to that for adatoms and monoclusters. As a consequence, large islands formed by cluster aggregation are also expected to be mobile. Using kinetic Monte Carlo simulations, and assuming a proper scaling law for the dependence on size of the diffusivity of large clusters, we find that islands consisting of as many as 100 monoclusters should exhibit significant mobility. This result has profound implications for the morphology of cluster-assembled materials.

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“…Technological applications require clusters to be deposited on surfaces, and so the physics of the deposition process is becoming increasingly important [6][7][8][9][10]. The ability to create a monodispersed array of size-selected clusters by deposition is thus an important goal.…”

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confidence: 99%

Shallow Implantation of “Size-Selected” Ag Clusters into Graphite

et al. 2000

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We have investigated the implantation of Ag N ͑N 20 200͒ clusters into a graphite substrate over the range of energies ͑E͒ 0.75 6 keV using molecular dynamics simulations. We find that after implantation the silver clusters remain coherent, albeit amorphous, and rest at the bottom of an open tunnel in the graphite created by the impact. It is found that the implantation depth of the clusters varies linearly as E͞N 2͞3 . We conclude that the cluster is decelerated by a constant force proportional to its cross-sectional area. We also identify a threshold energy for surface penetration associated with elastic compression of the graphite substrate.

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Diamondlike carbon films obtained by low energy cluster beam deposition: Evidence of a memory effect of the properties of free carbon clusters

Cited by 126 publications

References 20 publications

Growth of nanostructures by cluster deposition: Experiments and simple models

Growth of nanostructures by cluster deposition: Experiments and simple models

Diffusion of gold nanoclusters on graphite

Shallow Implantation of “Size-Selected” Ag Clusters into Graphite

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