Researchers

Mohammed Sabbah
Postdoctoral Researcher at Heriot-Watt University
Mohammed is working on developing compact ultra-violet laser sources for the U-Care project.
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After completing his MSc between the University of St Andrews and Heriot-Watt University in photonics and optoelectronic devices, he then carried out his PhD at Heriot-Watt working on developing new ultrafast light sources and studying the interaction of light with gases. This experience has ensured Mohammed is an expert in developing ultra-violet laser sources for healthcare applications.

Kerrianne Harrington
Postdoctoral Researcher at the University of Bath
Kerrianne is developing hollow optical fibres and systems for UV-C light (200-220 nm).
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Kerrianne is a postdoctoral researcher at the University of Bath as part of the interdisplinary U-Care project. Kerrianne works on developing hollow optical fibres and systems for UV-C light (200-220 nm) and is working to develop ways to precisely deliver this light for new therapies that target some of the biggest challenges facing medicine: cellular-precision cancer surgery, and the emergence of drug-resistant “super-bugs”.
Kerrianne is particularly excited by research that allows her to develops novel optical systems and optical fibres for applications. She interested in controlling light with optical fibres, and in designing and making novel fibres and fibre devices for practical applications. She has an extensive background in optical fibre fabrication, splicing, interconnection, packaging of optical fibres for robust handling, and simulation of optical fibres.

Calum Brown
Postdoctoral Researcher at Heriot-Watt University
Calum is investigating the effect of ultrafast lasers on microbial keratitis.
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Calum earned his BSc in Physics from the University of Edinburgh in 2010, followed by an MSc in Photonics and Optoelectronic Devices from the University of St Andrews and Heriot-Watt University in 2011. After completing his studies, he moved into industry, beginning his career as a laser scientist at M Squared Lasers. He later joined Alcon Eye Care, where he spent four years as a surgical engineer, working with cataract and vitreoretinal devices and specialising in refractive surgical systems across hospitals and clinics throughout the UK & Ireland.
In 2018, Calum returned to academia to pursue a doctorate in liquid crystal lasers at the University of Edinburgh. Following his PhD, he undertook his first postdoctoral position at Edinburgh before moving to Heriot-Watt University to focus on the medical applications of lasers. His research is particularly driven by a passion for ophthalmology, inspired by first-hand experience of how laser technologies can significantly enhance outcomes for both clinicians and patients. He is also an Associate Fellow of the Higher Education Academy, with a strong interest in education and mentoring. As part of the uCare team, Calum is investigating the effect of ultrafast lasers on microbial keratitis.

Aysha Ali
Postdoctoral Researcher at the University of Edinburgh
Aysha is developing UV-C light as a treatment option for microbial keratitis.
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Aysha completed her undergraduate and doctoral studies at the University of Birmingham. Her research focused on using modified DNA for the control and detection of proteins and small molecules. She worked for Science Capital, an event management company, helping to organise science events during her PhD. Her postdoctoral career began with developing new methods to detect potato viruses at Science & Advice for Scottish Agriculture (SASA). Her current role within the u-Care project involves investigating the effects of UV-C light as a treatment option for bacterial or fungal forms of microbial keratitis, an infection of the cornea. Her scientific interests lie in the early treatment and detection of infections, as well as public engagement.

Alex Burden
Research Technician at the University of Edinburgh
Alex is investigating the effects of deep-ultraviolet light (DUV) on human lung epithelial cells, eye models, and bacteria.
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Alex completed her undergraduate in mechanical engineering at Newcastle University discovering a love for bioengineering so completed a research masters at the University of Edinburgh in 2022. Alex joined u-Care in 2023 to investigate the effects of DUV light on human cells, eye models, and bacteria. She is working on understanding the mutagenesis of DUV light and bacterial efficacy.

Muhammad Afnan Ansari
Postdoctoral Researcher at Heriot-Watt University
Afnan specialises in flat optics and metasurfaces within the Institute of Photonics and Quantum Sciences.
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He received his PhD in Electrical Engineering with a specialisation in flat optics and metasurfaces in 2021. His research interests include the fundamental physics of metasurface and its applications in ultrathin optical devices for holography, microscopy, and polarization detection. Dr. Ansari received his bachelor’s degree in Electronics Engineering with distinction. Under the research fellowship programme for international researchers, he was awarded a prestigious fellowship by the Scientific and Technological Research Council of Turkey (TÜBİTAK) in 2018.

Francis Zhang
Postdoctoral Researcher at the University of Edinburgh
Francis is developing a novel and robust AI-based framework for intelligent navigation in robotic bronchoscopy.
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Francis is a postdoctoral research associate at the University of Edinburgh, working on the U-Care project. His current research focuses on developing navigation systems for autonomous robotic bronchoscopy, enabling the robot to understand where it is and where it needs to go within the human airway.
He received his PhD in Computer Science from Durham University, UK, where he focused on integrating geometric priors into deep learning systems for clinical video analysis. Prior to that, he received an MRes in Healthcare Technologies from King’s College London, an MSc in Statistics from the University of Southampton, and a bachelor’s degree in Medicine from Beijing University of Chinese Medicine.
He is passionate about developing robust and interpretable AI systems for healthcare applications. In addition, he has a strong interest and background in health informatics, particularly in the fields of psychiatry and epidemiology, supported by his prior training in medicine and statistics.

Saba Khan
Postdoctoral Researcher at Heriot-Watt University
Saba is working on the development of fibre-based shape sensing systems for robotic bronchoscopy.
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Saba Khan joined the U-care project as a research staff member in November 2024, where she is currently working on the development of a fibre-based shape sensing system for the daughter catheter of the bronchoscope.
Previously, she was with the University of St. Andrews, where she designed optical trapping systems and contributed to speckle metrology and optoacoustic imaging for early Alzheimer’s disease detection.
Earlier in her career, she held a postdoctoral position at IIT Delhi, focusing on structured light generation via wavefront and polarization shaping. She earned her PhD from IIT Kharagpur, India in 2017, specializing in few-mode fibre design, and was awarded a Women Scientist Project to develop mode analysis algorithms for advanced nonlinear fibre devices.

Feng Li
Postdoctoral Researcher at University of Edinburgh
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Logaheswari Muniraj
Postdoctoral Researcher at Heriot-Watt University
Loki is developing tools for imaging and tissue sampling the distal lung using a novel bronchoscope.
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Loki is a postdoctoral researcher in the experimental medicine domain of the u-Care project at Heriot Watt University. Her role is to fabricate micro-lenses using 2PP for imaging the far-field lung cavities. This will play a crucial role to map the lung airways providing insight into accessing deeper areas of the lung that hasn’t been reached or explored before. In addition to the fabrication of lenses, she is also developing novel tissue sampling tools using advanced laser-based manufacturing processes for performing biopsy with high precision and repeatability.
Loki received her doctorate in 2024 from Heriot-Watt University, for her work focussing on ‘Laser-based fabrication and heat treatment of shape memory alloys (SMAs)’. This was part of the EPSRC funding call for adventurous manufacturing project to build SMA based micro-scale components for applications in minimally invasive surgery. Her work effectively demonstrated the feasibility of fabricating NiTi-based SMAs using laser-induced forward transfer (LIFT).
Prior to her PhD, Loki received her master’s from Karlsruhe Institute of Technology and Aix Marseille University with specialisation in Photonic materials and devices. Her research during this time included constructing holographic notch filters, fabricating volume Bragg gratings and developing free-form micro-optical elements using high R.I resins.
Loki’s current research interests are inclined towards using laser-based manufacturing processes for precision engineering biomedical devices with focus on diagnostic and surgical applications. Beyond her research, Loki is also a passionate STEM ambassador and mental health advocate.