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Observation of Pore Growth and Self-Organization in Anodic Alumina by Time-Resolved X-ray Scattering

Vinogradov, Nikolay A. LU orcid ; Harlow, Gary S. LU ; Carlà, Francesco ; Evertsson, Jonas LU ; Rullik, Lisa LU ; Linpé, Weronica LU ; Felici, Roberto and Lundgren, Edvin LU (2018) In ACS Applied Nano Materials 1(3). p.1265-1271
Abstract
The anodic oxidation of metals such as aluminum and titanium can lead to the development of self-ordering pores. These pores make excellent templates for a range of nanoscale objects with many applications in nanoscience. Theoretical studies on pore formation have proposed several models for the establishment, growth, and ordering of these pores; however, experimental verification has mostly been limited to ex situ measurements. Here we show that the lateral and vertical pore structure can be probed in situ with high precision, using grazing transmission X-ray scattering. By making use of the high flux available at modern synchrotrons and fitting only the difference between scattering patterns we show the nearly real-time evolution of the... (More)
The anodic oxidation of metals such as aluminum and titanium can lead to the development of self-ordering pores. These pores make excellent templates for a range of nanoscale objects with many applications in nanoscience. Theoretical studies on pore formation have proposed several models for the establishment, growth, and ordering of these pores; however, experimental verification has mostly been limited to ex situ measurements. Here we show that the lateral and vertical pore structure can be probed in situ with high precision, using grazing transmission X-ray scattering. By making use of the high flux available at modern synchrotrons and fitting only the difference between scattering patterns we show the nearly real-time evolution of the pore’s arrangement. We observe no dependence on the substrate crystallographic orientation for domain size or pore separation. We do however observe an anisotropy in the oxide growth rate for the different substrate surfaces. This experimental approach can be applied to the study of a large variety of electrochemically produced materials such as magnetic nanowires, novel solar cell designs, and catalysts. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Applied Nano Materials
volume
1
issue
3
pages
7 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85047553515
ISSN
2574-0970
DOI
10.1021/acsanm.7b00303
language
English
LU publication?
yes
id
4d755f37-013b-4486-aa57-609b0b3b260f
date added to LUP
2019-05-08 14:54:09
date last changed
2023-11-18 20:55:46
@article{4d755f37-013b-4486-aa57-609b0b3b260f,
  abstract     = {{The anodic oxidation of metals such as aluminum and titanium can lead to the development of self-ordering pores. These pores make excellent templates for a range of nanoscale objects with many applications in nanoscience. Theoretical studies on pore formation have proposed several models for the establishment, growth, and ordering of these pores; however, experimental verification has mostly been limited to ex situ measurements. Here we show that the lateral and vertical pore structure can be probed in situ with high precision, using grazing transmission X-ray scattering. By making use of the high flux available at modern synchrotrons and fitting only the difference between scattering patterns we show the nearly real-time evolution of the pore’s arrangement. We observe no dependence on the substrate crystallographic orientation for domain size or pore separation. We do however observe an anisotropy in the oxide growth rate for the different substrate surfaces. This experimental approach can be applied to the study of a large variety of electrochemically produced materials such as magnetic nanowires, novel solar cell designs, and catalysts.}},
  author       = {{Vinogradov, Nikolay A. and Harlow, Gary S. and Carlà, Francesco and Evertsson, Jonas and Rullik, Lisa and Linpé, Weronica and Felici, Roberto and Lundgren, Edvin}},
  issn         = {{2574-0970}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{1265--1271}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Applied Nano Materials}},
  title        = {{Observation of Pore Growth and Self-Organization in Anodic Alumina by Time-Resolved X-ray Scattering}},
  url          = {{http://dx.doi.org/10.1021/acsanm.7b00303}},
  doi          = {{10.1021/acsanm.7b00303}},
  volume       = {{1}},
  year         = {{2018}},
}