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Université d'Orléans |  |
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Université d'Orléans | |
| HAL: hal-00581569, version 1 |
| DOI: 10.1016/j.physa.2011.02.001 |
| Detailed view |  Export this paper |
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| Physica A: Statistical and Theoretical Physics 390 (2011) 2112-2116 |
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| Enhanced anomalous diffusion of sputtered atoms in nanosized pores |
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| Sujuan Wu 1Pascal Brault 2 |
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| (2011-02-22) |
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| Plasma sputtering deposition of platinum catalysts in porous anodic aluminum oxide (AAO) templates is shown to generate an anomalous superdiffusion concentration profile. The growth of an overlayer between the hexagonal array of pores is shown to enhance the diffusion into the pores, leading to a diffusion coefficient having superlinear time dependence. The Pt clusters in the pores have a mean size of 10 nm and almost concentrate on the inner pore surface, and are present up to a depth of 6 μm. |
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| 1: | Center of condensed matter and materials Physics (School of Sciences) |
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Beihang University |
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| 2: | Groupe de recherches sur l'énergétique des milieux ionisés (GREMI) |
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CNRS : UMR6606 – Université d'Orléans |
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| 3: | Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI) |
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CNRS : UPR3079 – Université d'Orléans |
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| Subject | : | Engineering Sciences/Plasmas |
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| anomalous diffusion – cylindrical pore – atom transport |
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| hal-00581569, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00581569 | |
| oai:hal.archives-ouvertes.fr:hal-00581569 | |
| From: Pascal Brault | |
| Submitted on: Thursday, 31 March 2011 10:22:18 | |
| Updated on: Thursday, 31 March 2011 10:31:47 | |
