Enhanced anomalous diffusion of sputtered atoms in nanosized pores

Sujuan Wu; Pascal Brault; Cong Wang; Thierry Sauvage

doi:10.1016/j.physa.2011.02.001

Enhanced anomalous diffusion of sputtered atoms in nanosized pores

Sujuan Wu
, Pascal Brault^*
, Cong Wang
, Thierry Sauvage

^*Corresponding author for this work

School of Integrated Circuit Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	2112-2116
Number of pages	5
Journal	Physica A: Statistical Mechanics and its Applications
Volume	390
Issue number	11
DOIs	https://doi.org/10.1016/j.physa.2011.02.001
State	Published - 1 Jun 2011

Keywords

Atom anomalous diffusion
Atom transport
Concentration profile
Cylindrical pore

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10.1016/j.physa.2011.02.001

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title = "Enhanced anomalous diffusion of sputtered atoms in nanosized pores",

abstract = "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.",

keywords = "Atom anomalous diffusion, Atom transport, Concentration profile, Cylindrical pore",

author = "Sujuan Wu and Pascal Brault and Cong Wang and Thierry Sauvage",

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doi = "10.1016/j.physa.2011.02.001",

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T1 - Enhanced anomalous diffusion of sputtered atoms in nanosized pores

AU - Wu, Sujuan

AU - Brault, Pascal

AU - Wang, Cong

AU - Sauvage, Thierry

PY - 2011/6/1

Y1 - 2011/6/1

N2 - 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.

AB - 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.

KW - Atom anomalous diffusion

KW - Atom transport

KW - Concentration profile

KW - Cylindrical pore

UR - https://www.scopus.com/pages/publications/79953331566

U2 - 10.1016/j.physa.2011.02.001

DO - 10.1016/j.physa.2011.02.001

M3 - 文章

AN - SCOPUS:79953331566

SN - 0378-4371

VL - 390

SP - 2112

EP - 2116

JO - Physica A: Statistical Mechanics and its Applications

JF - Physica A: Statistical Mechanics and its Applications

IS - 11

ER -

Enhanced anomalous diffusion of sputtered atoms in nanosized pores

Abstract

Keywords

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