Three-dimensional imaging of dislocations

Correlated Three-Dimensional Imaging of Dislocations: Insights into the Onset of Thermal Slip in Semiconductor Wafers.

Correlated x-ray diffraction imaging and light microscopy provide a conclusive picture of three-dimensional dislocation arrangements on the micrometer scale. The characterization includes bulk crystallographic properties like Burgers vectors and determines links to structural features at the surface. Based on this approach, we study here the thermally induced slip-band formation at prior mechan...

Three-Dimensional Imaging of Dislocations and Defects in Materials at Atomic Resolution Using Electron Tomography

1. Department of Physics & Astronomy and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA. 2. National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. 3. Departments of Materials Science & Engineering and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA. 4 Departme...

Three-Dimensional Imaging of Dislocations in a Ti–35mass%Nb Alloy by Electron Tomography

We have studied three-dimensional (3D) configurations of dislocations in the β phase of a Ti-35mass%Nb alloy by means of single-axis tilt tomography using bright-field scanning transmission electron microscopy (BF-STEM). To visualize dislocations, the hh0 systematic reflections were excited throughout tilt-series acquisition with the maximum tilt angle of 70°. Dislocations in the β grains were ...

Visualization of Dislocations in a Three-Dimensional Nanoindentation Simulation

Three-dimensional ultrasound imaging.

Two-dimensional viewing of three-dimensional anatomy by conventional ultrasound limits our ability to quantify and visualize a number of diseases and is partly responsible for the reported variability in diagnosis. Over the past two decades, many investigators have addressed this limitation by developing three-dimensional imaging techniques, including three-dimensional ultrasound imaging. In th...