Nghia Vo


Nghia Vo is a Postdoctoral Research Associate for I12. Nghia joined Diamond in March 2013 after working for the Singapore Synchrotron Light Source.

Tel: +44 (0) 1235 778256

Key Research Area

Key research areas

  • Tomography
  • Phase contrast imaging

Latest publiations

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Research Expertise

  1. Research Expertise
  2. Collaborators
  3. Publications
Research Expertise -

Current Research Interests

Image Current Research Interests

Developing techniques of image processing for X-ray tomography & Phase contrast imaging is a very exciting research area. It is the combination of mathematics, physics and programming skills. With the high demand of researchers using 3D tomographic imaging as a main tool of research, the best quality of a 3D image reconstructed from experimental data is desirable. Two main steps of obtaining a tomographic image are pre-processing and tomographic reconstruction. Various techniques of image pre-processing can be applied to improve the data such as distortion correction, motion correction, phase retrieval, or artefacts removal. In the tomographic reconstruction, direct or iterative techniques can be used for different conditions of experiments. For the best quality data, each technique has to be at its best performance in the pipeline of tomography reconstruction. My current research is to apply various techniques to deal with different problems of tomographic data. If the published methods do not satisfy the requirement, I study to improve them or propose a new approach.

Collaborators - +
  1. Prof. Peter Lee, Manchester X-ray Imaging Facility (MXIF) - Improve tomographic data using phase techniques and ring artefact removal 
  2. Prof. Gayle Woloschak, Northwestern University, Feinberg School of Medicine, and Dr Si Chen, Bionanoprobe beamline, the Advanced Photon Source (APS) - Apply motion correction for X-ray fluorescence tomography.
  3. Dr. Wolfgang Ludwig, European Synchrotron Radiation Facility (ESRF) - Improve a dataset of phase contrast tomography using iterative technique.
Publications - +
  • Nghia T. Vo, Robert C. Atwood, Herbert O. Moser, Peter D. Lee, Mark B. H. Breese, Michael Drakopoulos: A fast-converging iterative method for X-ray in-line phase contrast tomography. Applied Physics Letters 11/2012; 101(22):224108. DOI:10.1063/1.4769046. 
  • Nghia T. Vo, Michael Drakopoulos, Robert C. Atwood, Christina Reinhard: Reliable method for calculating the center of rotation in parallel-beam tomography. Optics Express 07/2014; 22(16):19078-19086. DOI:10.1364/OE.22.019078.
  • Nghia T. Vo, Robert C. Atwood, and Michael Drakopoulos: Radial lens distortion correction with sub-pixel accuracy for X-ray micro-tomography. Optics Express 11/2015; 23(25): 32859-32868. DOI:10.1364/OE.23.032859. 
  • S. W. T. Price, K. Ignatyev, K. Geraki, M. Basham, J. Filik, N. T. Vo, P. T. Witte, A. M. Beale, J. F. W. Mosselmans: Chemical imaging of single catalyst particles with scanning μ-XANES-CT and μ-XRF-CT. Physical Chemistry Chemical Physics 11/2014; 17(1). DOI:10.1039/C4CP04488F. 
  • Michael Drakopoulos, Thomas Connolley, Christina Reinhard, Robert Atwood, Oxana Magdysyuk, Nghia Vo, Michael Hart, Leigh Connor, Bob Humphreys, George Howell, Steve Davies, Tim Hill, Guy Wilkin, Ulrik Pedersen, Andrew Foster, Nicoletta De Maio, Mark Basham, Fajin Yuan, Kaz Wanelik: I12: the Joint Engineering, Environment and Processing (JEEP) beamline at Diamond Light Source. Journal of Synchrotron Radiation 04/2015; 22(3). DOI:10.1107/S1600577515003513.