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Article Dans Une Revue Applied Surface Science Année : 2012

Platinum nanocluster growth on vertically aligned carbon nano fiber arrays: sputtering experiments and molecular dynamics simulations.

Résumé

Sputtered platinum nanocluster growth on previously plasma enhanced chemical vapor deposition - PECVD - grown vertically aligned carbon nano ber arrays is presented. Experimental cluster size distribution is shown to decrease from the CNF top to bottom, as observed by transmission electron microscopy. Molecular Dynamics simulations are carried out for understanding early stages of Pt growth on model CNF arrays. Especially, sticking coefficients, concentration profi les along CNF wall, cluster size distributions are calculated. Simulated cluster size distribution are consistent with experimental fi nding. Sticking coeffi cient decreases against deposition time. The shape of the sticking curve reflects the nanocluster growth process.
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Dates et versions

hal-00752502 , version 1 (16-11-2012)

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Pascal Brault, Amaël Caillard, Christine Charles, Rod Boswell, David B. Graves. Platinum nanocluster growth on vertically aligned carbon nano fiber arrays: sputtering experiments and molecular dynamics simulations.. Applied Surface Science, 2012, 263, pp.352-356. ⟨10.1016/j.apsusc.2012.09.059⟩. ⟨hal-00752502⟩
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