Imperial College London


Faculty of Natural SciencesDepartment of Physics

Research Postgraduate







H1102Blackett LaboratorySouth Kensington Campus





Neurotechnology is a rapidly growing area with opportunities in both clinical and commercial environments. Of interest is how and why our brains make the processes that they do. A direct method of measuring these neural processes is through the measurement of electrophysiological signals using electrodes. Recently, organic transistors have been shown to have a superior signal quality in certain regions of activity when compared to electrodes.

Working in a multidisciplinary environment, James's PhD research investigates the fabrication and implementation of organic electrochemical transistors for electrocorticography and electromyography. This is for the diagnosis and treatment of neurological and neuromuscular diseases and trauma and to develop the link between the brain and external electronic devices. The research is undertaken with the supervision of Professor J-S. Kim, Professor A. Campbell and Professor M. Boutelle in the Departments of Physics and Bioengineering. The position is a fully-funded EPSRC scholarship.

James graduated from Imperial College London in 2017 with an MSci degree in Physics with Theoretical Physics. His research project investigated how the flavours of neutrinos could change and decohere in a Lorentz invariant manner whilst remaining massless. This was in the context of quantum gravity and was supervised by Professor F. Dowker. James then proceeded to join the Centre for Doctoral Training (CDT) in Neurotechnology at Imperial College London. James then graduated in 2018 with a Distinction MRes degree in Neurotechnology and is currently undertaking his PhD.



Tyrrell JE, Petkos K, Drakakis EM, et al., 2021, Organic electrochemical transistor common‐source amplifier for electrophysiological measurements, Advanced Functional Materials, Vol:31, ISSN:1616-301X, Pages:1-13

Tyrrell J, Boutelle M, Campbell A, 2021, Measurement of electrophysiological signals in vitro using high-performance organic electrochemical transistors, Advanced Functional Materials, Vol:31, ISSN:1616-301X, Pages:1-12

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