Developing cold plasma sterilisation system for lumened medical devises and complex space instruments

About the Project

Supervisory Team: Prof Minkwan Kim and Prof Andrea Cammarano

This project tackles the critical challenge of sterilising narrow channels in medical and space instruments. We will develop a novel hybrid cold plasma system, combining RF plasma with a DBD plasma, for deep channel penetration. Supported by industry expert Aurora, this research adapts space-derived technology to deliver a validated, safer sterilisation process for both space and medical domains.

This project addresses a major limitation in current decontamination technologies. Modern medical and space instruments often contain long and narrow channels that conventional low temperature sterilisation methods cannot reach without risking damage to sensitive materials. This problem affects flexible endoscopes, life support systems, and complex scientific payloads used in space missions. The project will develop a hybrid cold plasma system that enables effective sterilisation deep inside these channels.

The approach combines a radio frequency (RF) capacitively coupled plasma (CCP) system for surface treatment with a flexible dielectric barrier discharge (DBD) plasma system originally designed for space applications. The flexible DBD device can be inserted into narrow channels and powered through a sterile pouch wall, allowing the generation of reactive oxygen and nitrogen species throughout the channel without compromising the sterile barrier. This project will also explore data-driven plasma control to improve reliability and efficiency. This includes developing a map that links plasma operating conditions with discharge stability and reactive species production.

The expected outcomes include a validated hybrid plasma process capable of achieving high level sterilisation along the entire channel length. The project offers close collaboration with Aurora, our industry partner with expertise in plasma-based sterilisation, providing training in plasma engineering, microbial validation, and regulatory considerations. This project therefore offers a unique opportunity to apply advanced plasma technologies to critical challenges in both healthcare and space missions, and to contribute to the development of next generation autonomous sterilisation systems.

Entry requirements

You must have a UK 2:1 honours degree or its international equivalent.

Fees and funding

Our industry partner, Aurora, will provide a 50% of the studentship cost and some level of project cost. This project is the part of evaluating our patented plasma endoscope sterilisation technology for technology licensing and commercialisation with Aurora.

How to apply

Apply now

You need to:

• choose programme type (Research), 2026/27, Faculty of Engineering and Physical Sciences
• select Full time or Part time
• search for programme PhD Engineering & the Environment (7175)
• add name of the supervisor in section 2 of the application

Applications should include:

• your CV (resumé)
• 2 academic references
• degree transcripts and certificates to date
• English language qualification (if applicable)