Scanning X-ray imaging with small-angle scattering contrast

A Gourrier; W Wagermaier; M Burghammer; Donna Lammie; H S Gupta; P Fratzl; C Riekel; Tim J Wess; O Paris

doi:10.1107/S0021889807006693

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Scanning X-ray imaging with small-angle scattering contrast

Journal article

Peer reviewed

Scanning X-ray imaging with small-angle scattering contrast

A Gourrier, W Wagermaier, M Burghammer, Donna Lammie, H S Gupta, P Fratzl, C Riekel, Tim J Wess and O Paris

Journal of Applied Crystallography, Vol.40(Supplement 1), pp.s78-s82

2007

DOI: https://doi.org/10.1107/S0021889807006693

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Abstract

bone

eggshell

hair

small-angle X-ray scattering

X-ray imaging

An X-ray scanning imaging technique using the integrated intensity of the small-angle X-ray scattering (SAXS) signal is presented. The technique is based on two-dimensional scanning of a thin sample section with an X-ray microbeam, collecting SAXS patterns at every scanning step using a two-dimensional detector. The integrated intensity within pre-defined regions of interest of the SAXS patterns is used to image bulk nanostructural features in the specimen with micrometre resolution which are usually not accessible by other methods such as light microscopy or scanning electron microscopy. The possibilities and limitations of the method are discussed with particular emphasis on the sources of contrast in the SAXS region for three biological specimens: cortical bone, eggshell and hair. Two main sources of image contrast are identified in the form of orientation effects for strongly anisotropic systems like cortical bone and differences in the local volume fraction of the scattering entities in eggshell. Moreover, other parameters than the integrated intensity can be quantitatively deduced from the SAXS patterns, for instance, the mean thickness of mineral platelets in bone or the strain distributions in a hair deformed plastically by microindentation. © International Union of Crystallography 2007.

Details

Title: Scanning X-ray imaging with small-angle scattering contrast
Authors: A Gourrier (Author) - Max-Planck Institute of Colloids and Interfaces, Germany
W Wagermaier (Author) - Max-Planck Institute of Colloids and Interfaces, Germany
M Burghammer (Author) - European Synchrotron Radiation Facility, France
Donna Lammie (Author) - Cardiff University, United Kingdom
H S Gupta (Author) - Max-Planck Institute of Colloids and Interfaces, Germany
P Fratzl (Author) - Max-Planck Institute of Colloids and Interfaces, Germany
C Riekel (Author) - European Synchrotron Radiation Facility, France
Tim J Wess (Author) - Cardiff University, United Kingdom
O Paris (Author) - Max-Planck Institute of Colloids and Interfaces, Germany
Publication details: Journal of Applied Crystallography, Vol.40(Supplement 1), pp.s78-s82
Publisher: Wiley-Blackwell Publishing Ltd.
Date published: 2007
DOI: 10.1107/S0021889807006693
ISSN: 0021-8898
Organisation Unit: Office of the Deputy Vice-Chancellor (Academic); University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99451359502621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Multidisciplinary; Crystallography

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