Article ID Journal Published Year Pages File Type
1501745 Scripta Materialia 2008 4 Pages PDF
Abstract

Crack tip dislocations in silicon single crystals have been observed by a combination of annular dark-field scanning transmission electron microscopy and computed tomography. A series of images was acquired by maintaining the diffraction vector parallel to that of crack propagation to achieve sharp images of the dislocations. The observed dislocations were reconstructed by a filtered back-projection, and exhibited three-dimensional configurations of overlaid dislocations around the crack tip.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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