| Type de publication : |
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Articles dans des revues avec comité de lecture |
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| Domaine : |
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Sciences de l'ingénieur/Plasmas
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| Titre : |
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Plasma assisted diffusion in porous materials: Experiments, modeling and applications |
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| Auteur(s) : |
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Pascal Brault ( ,  ) 1, Jean-Marc Bauchire () 1, Francois James () 2, Christophe Josserand () 3 |
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| Laboratoire : |
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| Résumé : |
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Plasma sputtering deposition of platinum on porous substrates is a relevant way for building high performance catalytic thin films. The knowledge and control of platinum density adsorbed in the porous medium, during deposition, are of primary importance. We show that the experimental concentration depth profiles originate from a superdiffusion phenomenon. Moreover experimental results are well described by a classical porous-fractal diffusion model, for which diffusion coefficient is also time-dependent, even if such a model does not include the proper physical mechanisms. |
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Langue du texte
intégral : |
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Anglais |
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| Journal : |
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Defect and Diffusion Forum |
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| Audience : |
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internationale |
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| Date de publication : |
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12/04/2012 |
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| Volume : |
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323-325 |
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| Page, identifiant, ... : |
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387-391 |
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| Mots Clés : |
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Anomalous diffusion equation – plasma sputtering deposition – AAO template – porous carbon – random stacking – catalytic film – fuel cell |
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