Journal article
Multiscale 3D characterization with dark-field x-ray microscopy
Dark-field x-ray microscopy is a new way to three-dimensionally map lattice strain and orientation in crystalline matter. It is analogous to dark-field electron microscopy in that an objective lens magnifies diffracting features of the sample; however, the use of high-energy synchrotron x-rays means that these features can be large, deeply embedded, and fully mapped in seconds to minutes.
Simple reconfiguration of the x-ray objective lens allows intuitive zooming between different scales down to a spatial and angular resolution of 100 nm and 0.001 degrees, respectively. Three applications of the technique are presented-mapping the evolution of subgrains during the processing of plastically deformed aluminum, mapping domains and strain fields in ferroelectric crystals, and the three-dimensional mapping of strain fields around individual dislocations.
This ability to directly characterize complex, multiscale phenomena in situ is a key step toward formulating and validating multiscale models that account for the entire heterogeneity of materials.
Language: | English |
---|---|
Publisher: | Springer International Publishing |
Year: | 2016 |
Pages: | 454-459 |
ISSN: | 19381425 and 08837694 |
Types: | Journal article |
DOI: | 10.1557/mrs.2016.114 |
ORCIDs: | Ahl, Sonja Rosenlund and Poulsen, Henning Friis |