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Dr Thomas Johnson
ACBE, Bernard Katz building
Torrington Place
  • Research Assistant
  • Dept of Biochemical Engineering
  • Faculty of Engineering Science

Thomas is a Post-doctoral Research Associate (PDRA) in Bioprocessing and Characterisation of Flow Through Porous Structures as a part of the UCL-Pall Centre of Excellence (CoE - https://www.ucl.ac.uk/biochemical-engineering/research/centres-excellence). Thomas achieved a 1st class (Hons.) MEng degree in 2014 and was a recipient of the PwC team prize in 2013 for the best presentation appraising and developing a biotech business proposal.

Thomas completed his Engineering Doctorate in 2019 with UCL (Professors Daniel Bracewell and Paul Shearing) and Pall Biotech (Dr. Peter Levison and Dr. John Welsh) in the area of visualising, characterising and modelling the 3D structure of liquid chromatography systems at packed bed and individual bead scales using X-ray computed tomography and focused ion beam microscopy, being associated to the Electrochemical Innovation Laboratory in Chemical Engineering, UCL since 2014.

In addition to continuing research themes in the PDRA, Thomas also is part of the Pall-UCL CoE management and sits on the Pall Biotech Academic Liaison Committee, responsible for the running and future vision of the collaboration. Thomas has oversight of and runs the Pall-UCL CoE student meetings that provide additional support to all of the CoE EngD candidates that enables students to have an enhanced involvement with Pall Biotech throughout their programme.

Research Themes
Research Summary
Thomas is interested in tomographic representation of bioprocessing material structure to better understand how 3D geometry relates to and impacts unit operation performance. In particular the optimisation and use of high resolution imaging techniques (X-ray computed tomography and focused ion beam for microscopy example) applied to industrially relevant products can be used to visualise and evaluate nanometre-scale detail to determine geometric characteristics such as porosity and pore sizes for chromatography and filtration materials.

The 3D structures generated using tomographic imaging can also be used for flow-based simulations that can be used for determination of properties such as diffusivity, permeability and tortuosity using laboratory-obtained values as inputs, linking real experiments on commercially available products to digital representations. The information and knowledge obtained using this approach is aimed at making suggestions to improve structural behaviour and characteristics of these materials for intended functions that meet emergent bioprocessing needs.
Teaching Summary

Thomas has been involved with teaching activities since 2015 for Planning in Bioprocessing and Life Sciences in addition to other courses with Professor Eli Keshavarz-Moore that are taught to both undergraduate and postgraduate students. Thomas has also held a supervisory role in the UCL iGEM team in 2014 and 2015, both times achieving a gold medal.

01-OCT-2018 Post-doctoral Research Associate Biochemical Engineering University College London, United Kingdom
Academic Background
2019   Doctor of Engineering University College London
2014   Master of Engineering University College London
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