Article (Scientific journals)
2-Point correlation function of nanostructured materials via the grey-tone correlation function of electron tomograms: A three-dimensional structural analysis of ordered mesoporous silica
Gommes, Cédric; Friedrich, Heiner; De Jongh, Petra E et al.
2010In Acta Materialia, 58, p. 770-780
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Keywords :
mesoporous materials; Electron tomography; Image analysis; Correlation analysis
Abstract :
[en] Electron tomography is a unique technique for imaging the microstructure of materials with a nanometer resolution. The signal to noise ratio of electron tomograms is, however, often too low for a reliable segmentation-based image analysis. We derive a general relation between the grey-tone correlation function of the tomograms and the 2-point correlation function of the morphology, which enables to analyze quantitatively the grey-tone correlation function with a morphological model of the material. The methodology is applied to SBA-15 ordered mesoporous silica. The three-dimensional grey-tone correlation function obtained from electron tomography is analyzed in terms of a hexagonal array of Gaussian independent pores. The model enables to relate the morphology obtained from the 2-point correlation function to macroscopic characterization data of the material, notably small-angle X-ray scattering and nitrogen adsorption.
Research center :
Departement de Chimie Appliquée, ULiège
Disciplines :
Materials science & engineering
Author, co-author :
Gommes, Cédric  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique
Friedrich, Heiner;  Universiteit Utrecht > Inorganic Cemistry and Catalysis
De Jongh, Petra E;  Universiteit Utrecht > Inorganic Cemistry and Catalysis
De Jong, Krijn P;  Universiteit Utrecht > Inorganic Cemistry and Catalysis
Language :
English
Title :
2-Point correlation function of nanostructured materials via the grey-tone correlation function of electron tomograms: A three-dimensional structural analysis of ordered mesoporous silica
Publication date :
2010
Journal title :
Acta Materialia
ISSN :
1359-6454
Publisher :
Elsevier Science
Volume :
58
Pages :
770-780
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 17 May 2010

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