TEM Orientation Mapping via Dark-Field Vector Images
OwnerCarl R. Mayerinventor
Life of this patent
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Abstract
Disclosed are various approaches for calculating crystal orientation via dark-field images from an electron microscope. In some examples, a system includes an electron microscope, at least one computing device comprising a processor and a memory, and machine-readable instructions stored in the memory. The instructions can cause the computing device to at least capture a plurality of dark-field images via the electron microscope. The computing device can calculate a crystal orientation based at least in part on data obtained from the dark-field images. The computing device can further generate an orientation map based at least in part on the crystal orientation.
Claims20
A system, comprising:
- an electron microscope;
- at least one computing device comprising a processor and a memory;
- and
- machine-readable instructions stored in the memory that, when executed by the processor, cause the computing device to at least:
- capture a plurality of dark-field images via the electron microscope;
- calculate a crystal orientation based at least in part on data obtained from the dark-field images;
- and
- generate an orientation map based at least in part on the crystal orientation.
A system, comprising:
- at least one computing device comprising a processor and a memory;
- and
- machine-readable instructions stored in the memory that, when executed by the processor, cause the computing device to at least:
- identify a pixel location in a plurality of dark-field images;
- assign a vector to the pixel location for respective individual dark-field images;
- sum the vectors corresponding to the pixel location across the plurality of dark-field images to yield a resultant vector, the resultant vector having a magnitude and a direction;
- and
- determine a crystallographic orientation based at least in part on the direction of the resultant vector.
A method, comprising:
- identifying at least one bright spot from a dark-field image, the at least one bright spot corresponding to a crystal area;
- determining a vector for the at least one bright spot;
- summing the vectors corresponding to the at least one bright spot across a plurality of dark-field images to yield a resultant vector;
- and
- determining an orientation of the crystal area based at least in part on a direction of the resultant vector.
Dependencies are inferred from the claim text.