Students

Our inaugural cohort joined us on 24 September 2019.

Tristan Burman

Hi, my name is Tristan and I’m from Ferndale in the Welsh Valleys. Thanks to my grandfather I have had an interest in physics from a young age and went on to study physics, maths and product design at A-Level.

Since then I graduated from Cardiff University with a master’s in physics (MPhys) focusing on programming and semiconductors in my final years. My final year project was to create an easy to use program to solve the Schrodinger Equation for semiconductor heterostructures. This program was able to simulate heterostructures under a bias, superlattices and determine overlap integrals between energy states.

Between graduating and starting the CDT program I undertook a summer placement with SPTS Technologies developing Python tools to speed up the analysis of the data files produced by their equipment.

My PhD project “Developing fabrication processes for optoelectronic integration” aims to etch and characterise compound semiconductor laser to determine the effect of facet roughness on device performance. These processes are required for large-scale manufacture of high-quality optoelectronic circuits. This project is supported by SPTS Technologies.

As for other interests, I enjoy experimenting with electronics, going to see comedians, spending time with friends and all things tech

Rachel Clark

My name is Rachel, I am originally from the West Midlands. I recently graduated from the University of Manchester with a Physics MPhys. I have always really enjoyed experimental physics and also many different aspects of condensed matter physics, but specifically I am interested in semiconductor materials and devices and their applications.


My masters project focused on the development of a novel characterisation technique for photovoltaic cells, which was first tested and refined on standard Silicon photovoltaic cells, then extended to research cells, including perovskite (MAPI). My PhD project is titled “Efficient semiconductor quantum light sources” and aims to develop a standardised “checklist” of measurements required to determine the efficiency of different single photon sources. The project will be undertaken in collaboration with the UK’s national standardisation institution, the National Physical Laboratory.


Outside of physics I love studying languages, particularly French, and I enjoy cooking, playing video games, and any type of quizzing.

William Cripps

Hi my name is Will. I am from Southampton and went to Royal Holloway where I graduated with an MSci in Experimental Physics.

My PhD project is titled “Deterministic nanoscale transfer printing of compound semiconductor nanowires for large scale device integration.” The main aims of this project are to improve the current transfer techniques so that nanowires can be moved more accurately and to scale up the process so that multiple nanowires can be moved at once which will help make nanowire based devices commercially viable.   

Seyed Urman Ghozati

Hi, I am Seyed. I am originally from Iran. I graduated from Azad University of Iran with a Bachelor’s degree in Electronics Engineering. According to my interest in science, I continued and got a Master’s degree in Electrical Power Engineering at Northumbria University in Newcastle, England. ‘’Hybrid Electric vehicles with a Switched Reluctance motor’’ was one of my favourite projects which I have done during the Master’s degree.

My PhD project is “Optimization of ohmic contact for GaN MMIC Power Amplifier on silicon for Millimetre-wave Applications using Au Free process” under Profesor Elgaid’s supervision. The research will mainly be focused on the development of a low-loss GaN technology HEMT ohmic contact using different plasma process techniques, lithography strategies, and a demonstrator power amplifier design that realised and characterised using on-chip matching techniques.

I joined the IET organisation in 2016 and was granted MIET title at 2019. For other interests, I can name poetry, gym spending time with friends and family.

Cobi Maynard

Hi, I’m Cobi. I’m originally from Bath. I studied the four-year MPhys Physics course at Cardiff University.

My PhD project is entitled “Semiconductor Integrated Photonics Manufacture and Characterisation” with Dr Beggs. It entails developing the design, manufacture and non-invasive optical characterisation of compound semiconductor photonic integrated devices. This project is partly funded by Newport Wafer Fab, where the devices developed will be compared to Silicon on insulator (SOI) integrated photonic devices.

For my undergraduate MPhys research project I investigated Gallium Nitride (GaN) nanowires grown via Molecular Beam Epitaxy (MBE) for optoelectronic devices. These nanostructures were analysed using Scanning Electron Microscopy (SEM) and Reflection High Energy Electron Diffraction (RHEED) experimental techniques.

During my undergraduate degree I was an Officer Cadet in the Universities of Wales Air Squadron, a committee member of the Chaos (Physics) society, and on the University Clay Pigeon Shooting Team. I am currently a member of the Feminist Society and the Hiking Society.

Paradeisa O’Dowd-Phanis

Hi, I’m Paradeisa. I completed my undergraduate degree at Cardiff University, where I was involved in the Broadway Dance Society and the yoga society.

My third year project involved modelling the refractive index of compound semiconductors (CS) using python, subsequently, applying these models in Lumerical’s mode solution in order to create CS waveguides.

In my spare time I like to dance, draw and practice calligraphy.

Bogdan Ratiu

I grew up in a small Romanian town deep in the mountains, a stone throw away from Dracula’s castle. I came to the UK to study physics and completed a Physics with Computer Science BSc degree at Sheffield. Then as part of the CDT I finished a MSc in condensed matter physics.

The areas of study I’m most interested in include optoelectronics, III/V on Si integration and computational physics. The MSc project was on quantum dots on InP substrates for Si integration. The project involved studying how the growth parameters of quantum dots and the device structure influenced the performance of the device.

My PhD project is about studying tunnel epitaxy, a technique similar to aspect ratio trapping but which traps dislocations in all three dimensions. We hope we can achieve defect free mismatched growth on sillicon using this technique. The main supervisor for this project is Qiang Li, and the industrial partner is Rockley Photonics.

Aside from that, I enjoy gaming, hiking, baking and tabletop games.

Join us 

The Centre for Doctoral Training is currently funded for five intakes, from 2019-2023. If you would like to join us, visit our how to apply page and get in touch if you have any questions.

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