Growth dynamics of pulsed laser deposited Pt nanoparticles on highly oriented pyrolitic graphite substrates

Dolbec, Richard; Irissou, Éric; Chaker, Mohamed; Guay, Daniel; Rosei, Federico; Khakani, My Alì El

doi:10.1103/physrevb.70.201406

Cited by 78 publications

(48 citation statements)

References 23 publications

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“…Substrate properties such as surface cohesive energy and diffusivity may in some cases modify or even hide effects related with cluster impact. This may exp lain for instance why Dolbec et al [34] observe that the mean size of Pt particles on HOPG mainly depends on the coverage (i.e. number of laser pulses) while apparently not depending on the kinetic energy (i.e.…”

Section: Methodsmentioning

confidence: 99%

Different W cluster deposition regimes in pulsed laser ablation observed by in situ scanning tunneling microscopy

et al. 2007

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We report on how different cluster deposition regimes can be obtained and observed by in situ Scanning Tunneling Microscopy (STM) by exploiting deposition parameters in a pulsed laser deposition (PLD) process. Tungsten clusters were produced by nanosecond Pulsed Laser Ablation in Ar atmosphere at different pressures and deposited on Au (111) and HOPG surfaces. Deposition regimes including cluster deposition-diffusion-aggregation (DDA), cluster melting and coalescence and cluster im plantation were observed, depending on background gas pressure and target-to-substrate distance which influence the kinetic energy of the ablated species. These parameters can thus be easily employed for surface modification by cluster bombardment, deposition of supported clusters and growth of films with different morphologies. The variation in cluster mobility on different substrates and its influence on aggregation and growth mechanisms has also been investigated.

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Section: Methodsmentioning

confidence: 99%

Different W cluster deposition regimes in pulsed laser ablation observed by in situ scanning tunneling microscopy

et al. 2007

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“…Metals can be deposited on graphite using a wide variety of techniques, ranging from wet (chemical) methods to gas-phase methods [11,[13][14][15][16]. As mentioned in the Introduction, this article focuses on the method of physical vapor deposition, because in that process, single atoms impinge on the graphite surface, leading most directly to atomic-scale insights.…”

Section: Overview Of the Experimental Contextmentioning

confidence: 99%

Transition metals on the (0 0 0 1) surface of graphite: Fundamental aspects of adsorption, diffusion, and morphology

Appy

Lei

Wang

et al. 2014

Progress in Surface Science

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In this article, we review basic information about the interaction of transition metal atoms with the (0001) surface of graphite, especially fundamental phenomena related to growth. Those phenomena involve adatomsurface bonding, diffusion, morphology of metal clusters, interactions with steps and sputter-induced defects, condensation, and desorption. General traits emerge which have not been summarized previously. Some of these features are rather surprising when compared with metal-on-metal adsorption and growth. Opportunities for future work are pointed out. Chemistry | Materials Science and Engineering | PhysicsComments NOTICE: This is the author's version of a work that was accepted for publication in Progress in Surface Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publications. A definitive version was subsequently published in Progress in Surface Science, 89 (2014), doi: 10.1016/j.progsurf.2014.08.001. AuthorsDavid Victor Appy, Huaping Lei, Cai-Zhuang Wang, Michael C. Tringides, Da-Jiang Liu, James W. Evans, and Patricia A. Thiel This article is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/chem_pubs/99 1 NOTICE: This is the author's version of a work that was accepted for publication in Progress in Surface Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publications. A definitive version was subsequently published in Progress in Surface Science, 89 (2014) Abstract.In this article, we review basic information about the interaction of transition metal atoms with the (0001) surface of graphite, especially fundamental phenomena related to growth. Those phenomena involve adatom-surface bonding, diffusion, morphology of metal clusters, interactions with steps and sputter-induced defects, condensation, and desorption. General traits emerge which have not been summarized previously. Some of these features are rather surprising when compared with metal-onmetal adsorption and growth. Opportunities for future work are pointed out. 1.Introduction.Graphite is an intriguing support for metals because of its inertness in aggressive environments, as well as its low cost and high abundance. A major application for graphite-supported metals is lithium ion batteries [1,2]. In fact, the demand for these batteries is expanding so quickly that it currently drives the international market in graphite [1]. An important application on the horizon is biofuel conversion, where graphite (or other carbon-based materials) may provide robust supports for catalysts in aqueous media [3].Adsorption of transition metals and noble metals on graphite has been studi...

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“…For very thin films ͑Ͻ5 nm͒ island growth is observed in some systems, however in general at high fluences like those used here, the high flux of energetic ͑hundreds of electron volts͒ metal atoms and ions produces smooth films and in some cases epitaxial growth. 24 By reducing the kinetic energy of the growth species, e.g., by introducing He during the growth, 25 nanostructured films can be deposited directly for some metals. However, above a few nanometers thick, these films consist of conglomerated, rather than isolated, nanoparticles.…”

Section: Methodsmentioning

confidence: 99%

Pulsed-laser-induced nanoscale island formation in thin metal-on-oxide films

2005

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The mechanisms controlling the nanostructuring of thin metal-on-oxide films by nanosecond pulsed excimer lasers are investigated. When permitted by the interfacial energetics, the breakup of the metal film into nanoscale islands is observed. A range of metals ͑Au, Ag, Mo, Ni, Ti, and Zn͒ with differing physical and thermodynamic properties, and differing tendencies for oxide formation, are investigated. The nature of the interfacial metal-substrate interaction, the thermal conductivity of the substrate, and the initial thickness of the metal film are all shown to be of importance when discussing the mechanism for nanoscale island formation under high fluence irradiation. It is postulated that the resulting nanoparticle size distribution is influenced by the surface roughness of the initial film and the Rayleigh instability criterion. The results obtained are compared with simulations of the heat transfer through the film in order to further elucidate the mechanisms. The results are expected to be applicable to the laser induced melting of a large range of different materials, where poor wetting of substrate by the liquid phase is observed.

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Growth dynamics of pulsed laser deposited Pt nanoparticles on highly oriented pyrolitic graphite substrates

Cited by 78 publications

References 23 publications

Different W cluster deposition regimes in pulsed laser ablation observed by in situ scanning tunneling microscopy

Different W cluster deposition regimes in pulsed laser ablation observed by in situ scanning tunneling microscopy

Transition metals on the (0 0 0 1) surface of graphite: Fundamental aspects of adsorption, diffusion, and morphology

Pulsed-laser-induced nanoscale island formation in thin metal-on-oxide films

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