Reduced electron exposure for energy-dispersive spectroscopy using dynamic sampling
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division ; Purdue Univ., West Lafayette, IN (United States). ECE Department
- Argonne National Lab. (ANL), Argonne, IL (United States). Mathematics and Computer Science Division
- Northwestern Univ., Evanston, IL (United States). Department of Materials Science and Engineering
- Purdue Univ., West Lafayette, IN (United States). ECE Department
Analytical electron microscopy and spectroscopy of biological specimens, polymers, and other beam sensitive materials has been a challenging area due to irradiation damage. There is a pressing need to develop novel imaging and spectroscopic imaging methods that will minimize such sample damage as well as reduce the data acquisition time. The latter is useful for high-throughput analysis of materials structure and chemistry. Here, in this work, we present a novel machine learning based method for dynamic sparse sampling of EDS data using a scanning electron microscope. Our method, based on the supervised learning approach for dynamic sampling algorithm and neural networks based classification of EDS data, allows a dramatic reduction in the total sampling of up to 90%, while maintaining the fidelity of the reconstructed elemental maps and spectroscopic data. In conclusion, we believe this approach will enable imaging and elemental mapping of materials that would otherwise be inaccessible to these analysis techniques.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Argonne National Laboratory - Laboratory Directed Research and Development (LDRD)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1416973
- Alternate ID(s):
- OSTI ID: 1549382
- Journal Information:
- Ultramicroscopy, Vol. 184, Issue PB; ISSN 0304-3991
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Progress toward autonomous experimental systems for alloy development
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journal | April 2019 |
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