Strain Mapping in TEM Using Precession Electron Diffraction

Overview

A sample material is scanned with a transmission electron microscope (TEM) over multiple steps having a predetermined size at a predetermined angle. Each scan at a predetermined step and angle is compared to a template, wherein the template is generated from parameters of the material and the scanning. The data is then analyzed using local mis-orientation mapping and/or Nye's tensor analysis to provide information about local strain states.

Intellectual Property and Development Status

United States Issued Patent- 9,568,442

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Elizabeth Poppert, Ph.D.

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