| EPSRC Reference: |
GR/R42276/01 |
| Title: |
High resolution high angle annular dark field imaging of materials with structural modulations |
| Principal Investigator: |
Humphreys, Professor Sir C |
| Other Investigators: |
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| Department: |
Materials Science & Metallurgy |
| Organisation: |
University of Cambridge |
| Scheme: |
Fast Stream |
| Starts: |
01 April 2001 |
Ends: |
31 March 2004 |
Value (£): |
47,522
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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A large variety of important materials have structural modulations, including certain alloys, ferroelectrics, semiconductors and superconductors. These modulations often play a critical role in the mechanical and electrical properties of these materials. Understanding the atomic composition and structure of such modulations can be a crucial step in understanding and manipulating the material's properties. Structural modulations are, however, notoriously difficult to characterise. It is therefore important to develop techniques for determining the structure of materials with structural modulations. Over the last decade, high angle annular dark field scanning transmission electron microscope (HAADF-STEM) imaging has proved to be a powerful technique for the atomic resolution imaging of certain materials. This research will develop HAADF-STEM imaging as a new means for the characterisation of structural modulations. It will do this through the development of accurate numerical models of the physical and instrumental processes involved in the formation of HAADF-STEM images of structural modulations and through the optimization of the experimental parameters involved. This technique will be tested on known modulated structures before being applied to unknown structural modulations in important materials.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cam.ac.uk |