Mapping fibre orientation in complex-shaped biological systems with micrometre resolution by scanning X-ray microdiffraction

Seidel, R., Gourrier, A., Burghammer, M., Riekel, C., Jeronimidis, G. and Paris, O. (2008) Mapping fibre orientation in complex-shaped biological systems with micrometre resolution by scanning X-ray microdiffraction. Micron, 39 (2). pp. 198-205. ISSN 0968-4328 doi: 10.1016/j.micron.2007.02.004

Abstract/Summary

A fully automated procedure to extract and to image local fibre orientation in biological tissues from scanning X-ray diffraction is presented. The preferred chitin fibre orientation in the flow sensing system of crickets is determined with high spatial resolution by applying synchrotron radiation based X-ray microbeam diffraction in conjunction with advanced sample sectioning using a UV micro-laser. The data analysis is based on an automated detection of azimuthal diffraction maxima after 2D convolution filtering (smoothing) of the 2D diffraction patterns. Under the assumption of crystallographic fibre symmetry around the morphological fibre axis, the evaluation method allows mapping the three-dimensional orientation of the fibre axes in space. The resulting two-dimensional maps of the local fibre orientations - together with the complex shape of the flow sensing system - may be useful for a better understanding of the mechanical optimization of such tissues.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/12366
Item Type	Article
Refereed	Yes
Divisions	Science > School of the Built Environment
Uncontrolled Keywords	X-ray microdiffraction, fibre orientation, biological materials, insect, cuticle, flow sensor, insect mechanoreceptor, POLE FIGURE ANALYSIS, CRYSTALLOGRAPHIC-TEXTURE, ATTACHMENT DEVICES, COMPOSITE-MATERIAL, ALPHA-CHITIN, BONE, MICROSTRUCTURE, DIFFRACTION, SCATTERING, RADIATION
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