My research interests centre on nonlinearity in physical and biomedical systems. Work with colleagues and international collaborators focuses on the superfluidity of liquid He-4 and its breakdown through production of rotons or quantized vortices above critical velocities – requiring the preparation and use of isotopically pure He-4. Research on the stochastic dynamics of nonlinear oscillators and large fluctuations illuminates: classical turbulence; wave turbulence and quantum turbulence in superfluids; neutron dynamics in fluid helium; origins of rogue waves; selective passage of ions through biological ion channels; and the nonlinear dynamics of ageing, anaesthesia, autism, brain function and cardiovascular diseases.
Physics of biological ion channels
Research has included work on: (a) magnetism including, especially, studies of spin-phonon interactions in rare-earth ethylsulphate crystals; (b) quantum fluids and liquid helium-4 in particular; (c) nonlinear dynamics and fluctuational phenomena including applications to physiology.
Current research centres on low temperature physics and nonlinear dynamics and biomedical physics.
External Collaborations:
Active collaborations, supported mainly by EPSRC and the Royal Society, include links with:
- Institute for Semiconductor Physics, Kiev
- Institute of Solid State Physics RAL, Chernogolovka
- Michigan State University
- Moscow State University
- Pisa University
- University of Birmingham
- University of Florida
- University of Manchester
- University of Ljubljana
- Redeemer's University
Conferences
Physics of Biological Oscillators: New Insights into Non-Equilibrium and Non-Autonomous Systems in Chicheley Hall, 27-30 November 2018
ESGCO-2016 International Conference on Biological Oscillations
Workshop on Fluctuations and Coherence 2011
BRACCIA Conference 2008
Editorial:
Editor in Chief of Fluctuation and Noise Letters. Currently serving on the Scientific Advisory Committee of Nonlinear Biomedical Physics and the Editorial Boards of Contemporary Physics, and Nonlinear Phenomena in Complex Systems.
