Rich Nonlinear Tomography for advanced materials
Lead Research Organisation:
UNIVERSITY OF OXFORD
Department Name: Engineering Science
Abstract
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Publications
Besnard C
(2023)
Synchrotron X-ray Studies of the Structural and Functional Hierarchies in Mineralised Human Dental Enamel: A State-of-the-Art Review.
in Dentistry journal
Besnard C
(2023)
Time-Lapse In Situ 3D Imaging Analysis of Human Enamel Demineralisation Using X-ray Synchrotron Tomography.
in Dentistry journal
Besnard C
(2022)
Nanoscale correlative X-ray spectroscopy and ptychography of carious dental enamel
in Materials & Design
Besnard C
(2024)
Advanced Time-Stepping Interpretation of Fly-Scan Continuous Rotation Synchrotron Tomography of Dental Enamel Demineralization.
in Chemical & biomedical imaging
Besnard C
(2021)
3D analysis of enamel demineralisation in human dental caries using high-resolution, large field of view synchrotron X-ray micro-computed tomography
in Materials Today Communications
Besnard C
(2022)
Hierarchical 2D to 3D micro/nano-histology of human dental caries lesions using light, X-ray and electron microscopy
in Materials & Design
Besnard C
(2023)
Multi-resolution Correlative Ultrastructural and Chemical Analysis of Carious Enamel by Scanning Microscopy and Tomographic Imaging.
in ACS applied materials & interfaces
Besnard C
(2024)
The DIAD Approach to Correlative Synchrotron X-ray Imaging and Diffraction Analysis of Human Enamel.
in Chemical & biomedical imaging
Fogarty K.
(2022)
Recovering the second moment of the strain distribution from neutron Bragg edge data
in arXiv conduit
| Description | The project on Rich Nonlinear Tomography for advanced materials covers a broad range of experimental and mathematical methods devoted to the reconstruction of 3D fields of non-scalar physico-chemical parameters: vectorial, tensorial, distributions, etc. Key findings in the project include: - Development and refinement of experimental approaches based on X-ray scattering to collect data for elastic strain (wide angle X-ray diffraction, WAXS) and nanostructure preferred orientation (small angle X-ray scattering, SAXS) - Refinement of mathematical fundamentals and numerical algorithms for SAXS tomography - Successful demonstration of strain tomography based on the method of moments using Bragg edge neutron diffraction - Rigorous identification of the limits of tomographic reconstructability of complex quantities |
| Exploitation Route | In 1979 the pioneering work of Godfrey Hounsfiled, electronics engineer, and Allan Cormack, mathematician and numerical methods specialist, was awarded Nobel Prize in Physiology or Medicine for the development of computer assisted tomography (CAT). Since then, computed tomography enjoyed evident success in the context of materials science and engineering, whilst the spatial and temporal resolution of the method was continuously improved to reach sub-micron and sub-second levels. However, original tomographic formulation reconstructs scalar fields, whereas the primary quantities of interest in many physics problems are of more complex, multi-component nature. Whilst some fundamental mathematical aspects have been the subject of fundamental research in recent decades, the translation of these results into appropriate experimental configurations and practical algorithms remained largely lacking until the present time. It has now been demonstrated that direction and vector fields, as well as tensor quantities such as stress and strain can also be reconstructed non-destructively, opening unprecedented new prospects for model validation and operando process observation. |
| Sectors | Aerospace Defence and Marine Chemicals Construction Electronics Energy Environment Healthcare Manufacturing including Industrial Biotechology Pharmaceuticals and Medical Biotechnology Other |
| Description | In 1979 the pioneering work of Godfrey Hounsfiled, electronics engineer, and Allan Cormack, mathematician and numerical methods specialist, was awarded Nobel Prize in Physiology or Medicine for the development of computer assisted tomography (CAT). Since then, computed tomography enjoyed evident success in the context of materials science and engineering, whilst the spatial and temporal resolution of the method was continuously improved to reach sub-micron and sub-second levels. However, original tomographic formulation reconstructs scalar fields, whereas the primary quantities of interest in many physics problems are of more complex, multi-component nature. Whilst some fundamental mathematical aspects have been the subject of fundamental research in recent decades, the translation of these results into appropriate experimental configurations and practical algorithms remained largely lacking until the present time. It has now been demonstrated that direction and vector fields, as well as tensor quantities such as stress and strain can also be reconstructed non-destructively, opening unprecedented new prospects for model validation and operando process observation. |
| First Year Of Impact | 2023 |
| Sector | Aerospace, Defence and Marine,Chemicals,Energy,Healthcare,Manufacturing, including Industrial Biotechology,Other |
| Impact Types | Economic |
| Title | In situ, in vitro observation of enamel erosion using synchrotron X-ray beam |
| Description | We developed the approach - previously not found in the literature - to set up in vitro enamel erosion on synchrotron beam line at Diamond, with simultaneous X-ray imaging and small/wide angle scattering (SAXS/WAXS). |
| Type Of Material | Improvements to research infrastructure |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | This approach was described in publicly available beamtime report on DLS system. It was also presented in the User Working Group meeting at DLS devoted to the design and building of the next generation instrument. |
| Description | Lionheart |
| Organisation | University of Manchester |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Experimental design and use |
| Collaborator Contribution | Algorithm development |
| Impact | Close collaboration within joint EPSRC project between Oxford (experiment and data interpretation; Korsunsky) and Manchester (mathematical foundations and algorithm development; Lionheart) |
| Start Year | 2009 |
| Description | A press release, https://www.diamond.ac.uk/Home/News/LatestNews/2023/210723.html |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Description of a review paper combining nearly 40 years of works of synchrotron on tooth,. |
| Year(s) Of Engagement Activity | 2018,2019,2020,2021,2022,2023 |
| URL | https://www.diamond.ac.uk/Home/News/LatestNews/2023/210723.html |