Photon Energy Becomes the Third Dimension in Crystallographic Texture Analysis.
Tilman A GrünewaldHarald RennhoferPieter TackJan GarrevoetDidier WermeillePaul ThompsonWim BrasLaszlo VinczeHelga C LichteneggerPublished in: Angewandte Chemie (International ed. in English) (2016)
Conventional analysis of the preferred orientation of crystallites (crystallographic texture) involves X-ray diffraction with area detectors and 2D data output. True 3D, spatially resolved information requires sample rotation in the beam, thus changing the probed volume, which introduces signal smearing and precludes the scanning of complex structures. This obstacle has been overcome by energy-dispersive Laue diffraction. A method has been devised to reach a large portion of reciprocal space and translate the X-ray photon energy into the missing third dimension of space. Carbon fibers and lobster exoskeleton as examples of biomineralized tissue have been analyzed. The major potential of this method lies in its "one-shot" nature and the direct 3D information requiring no previous knowledge of the sample. It allows the texture of large samples with complex substructures to be scanned and opens up the conceptual possibility of following texture changes in situ, for example, during crystallization.
Keyphrases
- electron microscopy
- high resolution
- contrast enhanced
- magnetic resonance imaging
- healthcare
- health information
- dual energy
- living cells
- ionic liquid
- electronic health record
- computed tomography
- mass spectrometry
- magnetic resonance
- risk assessment
- crystal structure
- gas chromatography mass spectrometry
- social media
- molecular dynamics simulations
- fluorescent probe
- deep learning
- data analysis
- single molecule
- human health
- liquid chromatography