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Ultramicroscopy Group Members

Group Picture 2021

Group Leader

Dr Lewys Jones FRMS MInstP
After a first degree in Material Science, Lewys received his PhD from the Department of Materials at the University of Oxford in 2013. This focussed on two themes; scanning stability in the aberration-corrected scanning transmission electron microscope (AC-STEM) and applications of focal series of annular dark-field data. Following 4 years as a post-doc in the Nellist group at the David Cockayne Centre for Electron Microscopy, in 2017 Lewys moved to Trinity College Dublin to found the Ultramicroscopy Group as the new Ussher Assistant Professor in Ultramicroscopy.
In 2019, Lewys was awarded a Royal Society & Science Foundation Ireland (SFI) University Research Fellowship to expand the hardware instrumentation development activities of the group.
Lewys has authored around 100 articles and proceedings with more than 1800 combined citations, and has launched two commercial software plug-ins for Digital Micrograph in collaboration with HREM Research.
Lewys is a co-director of the SFI-EPSRC Centre for Doctoral Training in Advanced Characterisation, an Editorial Board Member at Philosophical Transactions A, and has been a Fellow of the Royal Microscopical Society since 2015.

Research Fellows

Dr Jon Peters MInstP
Jon completed his PhD at the University of Warwick in 2017 under the supervision of Prof. Ana M. Sanchez. His thesis focussed on using TEM to explore the structure and functional properties of ferroelectrics from quantitative atomic resolution measurements. Jon's PhD was followed up by 3 years as a post-doctoral research fellow where he worked with Prof. Marin Alexe to study ferrotoroidic structures (e.g. polar vortices and skyrmions) in ferroelectric thin films and superlattices. With a fondness of programming, Jon has utilised the latest developments in computing to extract novel data from electron microscopy images, leading to new discoveries and insights into materials science. This work spans a range of topics such as 2D materials, semiconductor nanowires, electrochemistry and ceramics.

Commercialisation Managers

Fletcher Thompson

Engineering Specialists

Germano Motta

PhD Students (alphabetical)

Edward Gannon MSc
Edward graduated from University College Dublin in 2018 with a BSc in Chemistry in 2018. His final year project with Prof. Kenneth Dawson introduced him to nanotechnology and material science, working with ultra-small gold nanoparticles and their interactions with cancer cells. After being awarded the Intel Scholarship, he went on to study the formation of nanocomposites of iron oxide nanoflowers and graphene oxide under Dr. Dermot Brougham, completing his MSc in Nanochemistry from UCD in 2019. He is now studying for his PhD, through the Centre for Doctoral Training in Advanced Characterisation, with the Ultramicroscopy Group investigating photogrammetry on the microscale for 3D SEM imaging.
Patrick McBean BA
Patrick received his BA in Physics & Astrophysics in 2019 from Trinity College Dublin. Following his final year research project with Professor Jonathan Coleman in the Chemical Physics of Low-Dimensional Nanostructures research group, he is now working on his PhD with the Ultramicroscopy Group doing computational modelling of magnetic fields to design a new lens for transmission electron microscopes. In his spare time he competes in badminton and air-rifle.
Tiarnan Mullarkey BA
Tiarnan graduated from Trinity College Dublin with a BA in Physics in 2019. During his degree he completed a final year research project in the Ultramicroscopy group based on creating a digital, electron-counting imaging technique for ADF detectors used in scanning transmission electron microscopes. He will be continuing this research for his PhD project through the Center for Doctoral Training in the Advanced Characterisation of Materials. He hopes to use and further develop his new technique to characterise samples previously too sensitive to image with current analogue techniques.
Cameron O’Byrne BA
Cameron completed his undergraduate degree in 2019, graduating with a BA in Physics from Trinity College Dublin. He studied for his final year research project in the Ultramicroscopy group, modelling the magnetic and optical performance of TEM objective lens. He is now continuing his studies working towards a PhD, investigating the performance of new electron detection technology. He hopes his research will lead to increases in the cost:performance ratio of detectors in electron microscopes.
Frances Quigley BA
Frances graduated from her undergraduate degree in Physics in Trinity College Dublin in 2019. During this she completed a research project in surface-science at Soochow University, China as well as a biophysics project at the University of Sydney using high performance computing. She is currently studying for her PhD with Dr. Lewys Jones in low-energy electron microscopy with the aim of creating a new low-energy electron emitter exploiting photoelectric emission. Frances has a strong interest in science communication and has worked for almost three years in the Science Gallery Dublin as a mediator developing her science communication skills.

Past Group Members




Manufacturing Technology Specialists

David O’Mahony MEng MIEI
David is a Manufacturing Engineer with over 30 years of experience including manufacturing processes and the maintenance and development of scientific research equipment. He currently works for the School of Physics, at Trinity College Dublin delivering Engineering best practice to Principle investigators and researchers. David works with researchers in the area of 3D additive manufacturing, 2D material printing, nano scale printing in polymers, and ceramics. He supervises technical and non-technical teams and supports industrial and research projects from small one-component design and manufacture to larger automation and equipment rollout.


Laidlaw scholars

Michael Mitchell - 2020, 2021
Michael is a third year undergraduate student studying Theoretical Physics in Trinity. He is a recipient of the Naughton Scholarship, the Hamilton Trust, the Laidlaw Scholarship, and is currently researching the use of machine learning in the denoising of electron microscopy images as part of the Laidlaw programme during the summer of 2020. He is founder and elected auditor of the Theoretical Physics Student Association.
Jean O’Brien - 2019, 2020
Jean is a third year undergraduate student studying theoretical physics in Trinity. In 2018 she completed a summer research project entitled "Sample Preparation for Transmission Electron Microscopy" as part of the Ultramicroscopy group. She is a recipient of the Naughton Scholarship and the Laidlaw Scholarship and is currently researching microplastics in the environment in Ireland as part of the Laidlaw programme. Her project involves five weeks of research in the summer of 2019 and a further five weeks of research in the summer of 2020, after which she will produce a final report and poster.

Summer students

Donnacha Henchy - 2021
Emma Hughes - 2021
David McSharry - 2021
Peter O'Donovan - 2020
Michael Mitchell - 2018
Jean O’Brien - 2018
William O’Sullivan - 2018
Claire Rieger - 2018

Final-year Project Students

Maya Clinton - 2021
Matthew Geever - 2021
Jordan Kenny - 2021
Elizabeth Nelson - 2020
Grainne Allen - 2019
Éanna Doyle - 2019
Cameron O'Byrne - 2019
Connal McNamara - 2018
Tiarnan Mullarkey - 2018
Catriona Murphy - 2018
Mark Murray - 2018