Publication 565
J. Appl.
Cryst., 36, 713-717, 2003
DOI: 10.1107/S0021889803000281 |
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Small-angle neutron scattering by porous alumina membranes
made of aligned cylindrical channels
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Damien
Marchal and Bruno Demé
Contribution from the Laboratoire d'Electrochimie
Moléculaire, Université de Paris 7 -
Denis Diderot, Case Courrier 7107, 2 place Jussieu,
75251 Paris Cedex 05, France.
Small-angle neutron scattering is used to investigate porous alumina
membranes -Al2O3) made of parallel channels with cylindrical shape.
The membranes are produced by anodization of thin aluminium sheets. The
scattering experiments are performed in a coaxial geometry where the
cylindrical pores are oriented with their long axis parallel to the incident
beam resulting in isotropic scattering patterns due to the circular symmetry.
The results obtained with commercial Anodisc® membranes
and membranes synthesized in our laboratory are compared to radialy averaged
2D Fourier transforms of electron microscopy images of the alumina membrane
surface and to known values of the materials' porosity. |