187
.lancs.ac.uk/depts/physics/
www
Dynamics and Turbulence
carbon-nanotube and graphene based optoelectronic materials and
Prof PVE McClintock, L Skrbek, G G Ihas, Drs V B Efimov, A
devices, quantum dot and phase change memories, superconducting
Ganshyn, M Giltrow, I A Khovanov, G Kolmakov, DG Luchinsky, A
tunnel junctions and the development of advanced techniques for
Stefanovska and R Tindjong.
nanoscale characterization of materials and devices.
Turbulence represents a major unsolved problem in physics of huge
Physics
importance in practical applications. In collaboration with partners
Our research into the physics of semiconductor nanostructures and
in Birmingham, Florida and Prague, we aim to understand how
devices includes the MBE (molecular beam epitaxy) growth of a
classical turbulence is modified in a superfluid, where flow is
variety of III-V compounds, with emphasis on mid-infrared (2-5µm)
severely restricted by the quantization of circulation. Our
optoelectronics, spectroscopy of quantum structures and scanning
experiments on wave turbulence in superfluid
4
He are illuminating
probe microscopy (SPM). This is stimulated by a wide range of novel
the origin of rogue waves on the ocean.
physical phenomena and practical applications, such as mid-infrared
lasers, LEDs and detectors for environmental monitoring, fire
We also study stochastic resonance (relevant to the ice-age cycle,
detection and free-space optical communications, devices for
echnology:
ring lasers, and sensory neurons) and Brownian ratchets (the
telecommunications, charge-based and phase change memories.
nanoscale motors responsible for protein transport in biological
This research includes the growth, characterisation and high-
cells). We are modeling conduction in biological ion channels in
magnetic-field spectroscopy of self-assembled quantum dots. These
collaboration with Rush Medical Center in Chicago, using ideas
‘artificial atoms’ are spontaneously formed when a few mono-layers
from stochastic nonlinear dynamics and numerical simulation. of material are deposited on a substrate with a different lattice
Please see our website for further information. constant, and are an area of intense scientific activity worldwide.
Biomedical Physics The work on SPM substantially broadens our range of interests. We
Drs A Stefanovska, A Bahraminasab, D Garcia-Alvarez, P B M have developed several new instrumental paradigms in
Clarkson, M A Entwistle, and Profs P V E McClintock and A Smith. nanotechnology by combining SPM with localised chemical
Science and T
We apply nonlinear physics to study the function of living systems. fingerprinting, spectroscopic analysis, thermal measurements and
We seek a fundamental understanding of the oscillatory processes ultrasonic imaging. A spin out company, Anasys instruments, has
involved in energy transfer within the cardiovascular system and been launched to commercialise some of this work: our “micro-
information transfer within the brain. thermal analysis” and “ultrasonic force microscopy”, or UFM, are
now used worldwide. Our new technique, photothermal microspec-
We study noisy nonlinear oscillators analytically and numerically, in troscopy (or PTMS) allows infrared spectroscopy to be performed on
particular to characterize their interactions. We develop analytical an individual cell, and our recent development, combining PTMS
and numerical tools to deal with the time–varying, non- with carbon nanotubes, is aimed at spectroscopic imaging capable
autonomous processes characteristic of living systems, including of sub-cellular resolution. The UFM family of SPM’s reveals otherwise
wavelet-based bispectral methods and synchronization. The work unobservable surface and sub-surface properties of nanostructures,
involves collaboration with the Royal Lancaster Infirmary and with as well as the dynamics of physical phenomena.
partners in Europe, USA, Canada and Japan. To date we have
tackled problems related to anaesthesia, aging, cardiac failure, Work is undertaken in an atmosphere of strong national and
diabetes, hypertension and post-myocardiac infarction. Please see international cooperation and is supported by EPSRC, the Royal
our website for further information. Society, the Technology Strategy Board, the European Commission
and the European Space Agency. Particularly strong links exist with
Optoelectronics and Nanostructures the Universities of Hull, Nottingham, Oxford, Sheffield and Surrey,
Prof A Krier, Drs M Hayne, R Jones, O Kolosov, A G Kozorezov, S E and at the international level with TU Berlin, NTU Taiwan, CNR
Krier, M Pumarol, M Yin, Q D Zhuang and H M Pollock (Emeritus). institutes in Pisa and Bologna, Hokkaido University, University of
Research within the group involves experiments on semiconductor, Connecticut, the Loffe Institute, Wroclaw University of Technology,
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