Add @exeter.ac.uk to email addresses given.
Telephone numbers are given in the format +44 (0) 1392 72-XXXX for dialling externally. XXXX is the internal extension given. Fax: +44 (0) 1392 724111. |
| Staff |
Prof. Roy Sambles FRS
Prof. of Experimental Physics
Staff page - Publications
Rm: 604 Tel: 4103
Email:
j.r.sambles
|
Prof. Bill Barnes
Professor of Photonics
Staff page - Publications
Rm: 609 Tel: 4135
Email:
w.l.barnes
|
Prof. Rob Hicken
Prof. of Condensed Matter Physics
Staff page - Publications
Rm: 306 Tel: 4153
Email:
r.j.hicken
|
Prof. Peter Vukusic
Associate Professor
Staff page - Publications
Rm: 113 Tel: 2029
Email:
p.vukusic
|
Dr. Feodor Ogrin
Senior Lecturer
Staff page - Publications
Rm: 305 Tel: 4116
Email:
f.y.ogrin
|
Prof. Fuzi Yang
Visiting Professor
Publications
Rm: 610 Tel: 2562
Email:
f.yang
|
Dr. Stavroula Foteinopoulou
Lecturer
Staff page
Rm: 710B Tel: 2101
Email:
S.Foteinopoulou |
Dr. Euan Hendry
RCUK Fellow
Staff page - Publications
Rm: 514c Tel: 5654
Email:
e.hendry
|
Dr. Alastair Hibbins
Lecturer
Staff page - Publications
Rm: 710A Tel: 2100
Email: a.p.hibbins
|
Dr. Volodymyr Kruglyak
EPSRC Advanced Res. Fellow
Staff page - Publications
Rm: 513a Tel: 2511
Email: v.v.kruglyak
|
Dr. Ehsan Ahmad
Research Fellow
Nanosccale Magnonics - Magnetic materials
Rm: 710C Phone: 5653
Email: ea265
|
Dr Yat-Yin Au
Research Fellow
Nanosccale Magnonics - Magnetic materials
Rm: 214 Tel: 4198
Email: ya222
|
Dr. Oleksandr Dmytriiev
Research Fellow
Nanosccale Magnonics - Spintronics
Rm: 710C Tel: 5653
Email: od218 |
Dr. Matt Lockyear
Research Fellow
Staff page - Publications
Rm: G12 Tel: 5655
Email: m.j.lockyear
|
Dr. Ian Hooper
Research Fellow
Staff page - Publications
Office: G12 Phone: 5655
Email:
i.r.hooper
|
Tom Isaac
Research Fellow
Publications - Nanosccale Magnonics - THz photonics
Rm: 206 Tel: 4104
Email: t.isaac
|
Dr. Paul Keatley
Research Fellow
Publications
Office: 304 Phone:
Email: p.s.keatley
|
Dr. Yanwei Liu
Research Fellow
Publications
Office: 209 Phone: 4163
Email: y.liu
|
Dr. Lizhen Ruan
Research Fellow
Publications
Office: 610 Phone: 2562
Email: l.ruan
|
Dr. Tomasz Trzeciak
Research Fellow
Natural photonics
Rm: G31a Tel: 4187
Email: t.m.trzeciak
|
Mr. Nick Cole
Workshop Technician
Tel: 4191
Email:
n.cole |
|
Mr. Russell Edge
Workshop Technician
Tel: 4191
Email:
r.edge |
|
|
| Research Students |
Uday Al-Jarah
PhD Student (Rob Hicken)
Rm: G30 Tel: 4152
Email: uasa201
|
Shalini Ashawaraya
PhD Student (Rob Hicken)
Project
My project complements ongoing EPSRC funded research into the speed of the phase transition between amorphous and crystalline states in chalcogenide alloys such as Ge2Sb2Te5 (GST), which are used to store information on optical disks and within random access memory (RAM) chips. Time-resolved femtosecond optical measurement techniques will be used to investigate whether optical excitation of specific electronic states drives a non-thermal phase transition. Time resolved optical and electrical measurements will be performed upon prototype RAM cells to understand the dynamics of threshold and memory switching processes in real devices.
Rm: Tel:
Email: as472
|
Harry Basil
PhD Student (Julian Moger/Euan Hendry)
Project “Harnessing Non-linear Plasmonics: Structured substrates for enhanced non-linear optics”
It is well known that weak optical responses can be enhanced by the strong local electric fields associated with surface plasmon resonances of metallic nanostructures. In principle, it is possible to obtain even higher signal gain by surface enhancement of a non-linear process. We propose to investigate and optimize this non-linear enhancement via two lines of investigation: (1) development of novel detection schemes to heighten discrimination of molecular signals over the metallic response. (2) A comprehensive and methodical investigation into how the non-linear response of metallic nanostructures can be altered by geometric factors, exploring high Q structures such as ring resonators which can exhibit high local-field enhancements outside the metal.
Rm: Tel:
Email: hb275 |
Elizabeth (Lizzy) Brock
PhD Student (Alastair Hibbins)
Project “Lateral confinement and subwavelength control of microwave surface waves on metamaterials”
I shall explore how one can attain control of the propagation of microwave surface waves via variation of the geometry of metamaterial surfaces. For example, one can induce a graded phase change in reflection to provide a virtual tilt to a reflector, or replicate the response of a parabolic dish. In addition, one can create ‘virtual’ waveguides on the surface of the array by either laterally grading the geometry deformation and hence the surface impedance. I envisage the development of surface wave devices such as beam splitters or combiners, and tapers and focussing or collimating systems for surface power, and will seek to employ either finite element (FEM) or finite difference time domain (FDTD) methods to model the power flow in these devices. - Microwave Photonics
Rm: G31 Tel: 4187
Email: emgb202 |
Matt Biginton
PhD Student (Roy Sambles/Alastair Hibbins)
Project “Microwave characteristics of tessellated surfaces”
This Dstl funded project investigates new topology and material combinations for use as microwave absorbers. This includes the study of tessellated surfaces as impedance matched layers, comprised of subwavelength-sized permittivity- and permeability- dominated patches .These novel designs will offer improvements in performance, and reduction in thickness over existing technologies. - Microwave Photonics
Rm: G31 Tel: 4187
Email: mpb202
|
James Brown
External PhD Student (Roy Sambles)
Email: james.brown [at] omni-id.com
|
Christopher Burrows
PhD Student (Bill Barnes)
Project “Taking metamaterials towards the visible”
The aim of this project is to fabricate metal nanoparticles and both experimentally and numerically analyse their optical properties in order to prepare arrays that produce an effective set of optical parameters (i.e. permittivity and permeability). Currently, I am investigating higher order, non-dipolar resonances of particles, as well as the overlap of dipolar and quadrupolar modes in dense arrays. - Plasmonics
Rm: G31a Tel: 4187
Email: c.p.burrows
|
Celia Butler
PhD Student (Alastair Hibbins/Roy Sambles)
Project “Extended Bandwidth Metamaterials”
This QinetiQ funded project is concerned with understanding and developing novel multilayer structures with broadband transmission and absorption characteristics in the microwave regime. This includes tuning multiple resonant systems, manipulating surface waves using patterned metallic surfaces, and increasing electromagnetic bandwidths. - Microwave Photonics - Publications
Rm: G31 Tel: 4187
Email: celia.butler
|
Toby Campbell
MPhil Student (Roy Sambles/Alastair Hibbins)
Microwave Photonics
Email: tic203
|
Tom Constant
PhD Student (Roy Sambles/Alastair Hibbins)
Project "Detailed study of zigzag metal gratings"
The term “metamaterial” has recently been coined to describe metallic structures patterned on the subwavelength scale and that exhibit novel electromagnetic properties. Perhaps the simplest example of a metamaterial is a metallic diffraction grating. In this EPSRC funded project I will study for the first time "zigzag gratings". These present an entirely new, and as yet completely overlooked type of metamaterial, the study of which will draw together the highly topical and active research areas of plasmonics and metamaterials. - Plasmonics
Rm: Basement Tel: 4156
Email: T.J.Constant
|
Toby Davison
PhD Student (Volodymyr Kruglyak)
Project "Sub-Picosecond Control of Nano-Magnets"
The effective magnetic field of circularly polarised ultrashort optical pulses can reverse magnetisation on ever short time scales. Within my EPSRC funded project, I am exploring ways how this so called photo-magnetic switching could be used to switch magnetisation of nanoscale magnetic elements, which will be of a remarkable importance for future magnetic data storage technologies. - Ultrafast phenomena - Magnetic materials
Email: td218
|
Tom Duckworth
PhD Student (Feodor Ogrin)
Project“Hologrphic imaging of patterned magnetic nanostructures”
We propose to develop a suite of imaging techniques for direct observation of magnetic domains in continuous and nanostructured materials. Based on lensless X-ray holography, these techniques will be capable of obtaining magnetic images with sub-100 nm resolution and suitable for measurements under applied magnetic field. - Magnetic Materials
Rm: G18 Tel: 4186
Email: tad203
|
Mykola Dvornik
PhD Student (Volodymyr Kruglyak)
Project "Computational Magnonics"
Magnons propagating within nanoscale magnetic circuits offer unique opportunities for future non-volatile logic architectures. The associate field of research is now called magnonics. Within my ORSAS funded project, I am using advanced computational techniques to study fundamental properties of magnons and to explore novel magnonic devices. - Nanoscale Magnonics
Rm: 710C Tel: 5653
Email: mad211
|
James Edmunds
PhD Student (Sambles/Hibbins)
Project "Microwave Studies of Thin Structured Metal Films"
The aim of my work is to look at the microwave transmission and reflection response of thin metal/dielectric composite films in order to look at useful and interesting electromagnetic phenomena. This includes behaviour such as selective transmission/absorption, enhanced transmission, frequency selection and negative refraction. - Microwave Photonics
Rm: G31 Tel: 4187
Email: j.d.edmunds
|
Prim Gangmei
PhD Student (Rob Hicken)
Rm: G30 Tel: 4152
Email: pg245
|
Peter Hale
PhD Student (Alex Savchenko/Euan Hendry)
Project "Optical and transport studies of carbon-based nanostructures".
This project involves optical and electrical studies of electron relaxation mechanisms in carbon nanostructures, focusing on electron - electron, electron-phonon and electron-defect interactions which will be essential for the operation of future graphene devices. The project involves both fabrication of carbon nanostructured devices and state of the art optical and transport measurements.
Rm: G28 Tel: 4197
Email: P.J.Hale |
Richard Hartmann
PhD student (Misha Portnoi/Bill Barnes)
Email: r.r.hartmann
|
Chris Holmes
PhD student (Roy Sambles)
Project "Viscodynamics of Liquid Crystals"
The aim of this work is to quantify the flow characteristics and viscosity coefficients of nematic liquid crystals. I am using waveguide techniques, conoscopy and fluorescence confocal microscopy to characterise the director profiles in cells under pressure induced flow. A further aim is to explore the flow of liquid crystals around obstacles of micron scale, helping to further understand switching in cells containing surface structures. - Publications - Liquid Crystals
Rm: Basement Tel: 4156
Email: c.holmes
|
Artem Jerdev
PhD Student (Bill Barnes)
Attogram - Project “High-resolution Imaging DSPR Biosensor”.
The purpose of this work is to build a reliable 2-dimensional biosensor based on the effect of differential surface plasmon resonance (DSPR).
The device monitors local chemical interactions in a thin layer of proteins immobilized on a gold-coated slide.
Its very high spacial resolution and extraordinary fast imaging rate combined with the ultimate DSPR sensitivity and relatively low production costs can make it useful for a broad field of analytical applications.
Rm: G31 Tel: 4187
Email: aj241
|
Nicholas Jones
External PhD Student (Roy Sambles)
Email: NCJONES1 [at] qinetiq.com
|
Alfie Lethbridge
PhD Student (Pete Vukusic)
Rm: Basement Tel: 4156
Email: al262
|
Stephen Luke
PhD Student (Pete Vukusic)
Project “Biomimetic engineering of structural white through anisotropic scatter in nanoscopic matter”
The aim of this work is to identify and understand the microstructures used for colour production in nature, looking specifically at white specimens. I use the SEM to identify and measure the microstructures. The optical effects of the microstructures are then characterised using spectroscopy. I also use finite element modelling to gain further understanding of how these microstructures scatter light. - Natural Photonics
Rm: Basement Tel: 4156
Email: s.m.luke
|
Max Marcham
PhD Student (Rob Hicken)
Project
This EPSRC funded project utilises 3rd generation synchrotron sources to make time resolved x-ray measurements of the dynamic behaviour of magnetic nanostructures on picosecond timescales. An improved understanding of the dynamics of such structures is essential for the development of future spintronic devices.
- Magnetics
Rm: G30 Tel: 4152
Email: mkm202
|
Rostislav Mikhaylovskiy
PhD Student (Kruglyak/Hendry)
Project “THz Magnonics”
This experimental project aims to use THz spectroscopy to observe short wavelength (exchange) spin waves (magnons) in periodically patterned magnetic nanostructures - magnonic crystals.
If successful, the project will pave way to a new generation of THz devices, which will be based on spin waves. - Nanoscale Magnonics
Rm: G18 Tel: 4186
Email: rm350 |
Dmitry (Dima) Polyushkin
PhD Student (Bill Barnes)
Project “Plasmonics and Gain”
The optical frequency absorption process in metals lead to the surface plasmon modes that nano-structured metal surfaces support being lossy. This is a wide-ranging problem, for example limiting the degree of field enhancement that can be achieved. The idea here is that gain made available in a surrounding medium may offset the absorption in the metal. This a little explored area, in particular there is very little experimental work reported so far. In this project the focus is on developing a proper understanding how plasmon modes are modified by the presence of gain. - Plasmonics
Rm: G31 Tel: 4187
Email: dkp201 |
Caroline Pouya
PhD Student (Pete Vukusic)
Project "Photonic Crystals in Natural Systems"
The aim of this work is to understand the optical properties and structures within various natural systems in order to utilise their functions elsewhere. I am using a TEM to probe the photonic crystal structures within the scales on the weevil beetle's surface. Reflection images and spectra obtained from confocal microscopy will also enable me to establish the photonic band-gaps of the structure. - Natural Photonics
Rm: Basement Tel: 4156
Email: cp213
|
Helen Rance
PhD Student (Roy Sambles/Alastair Hibbins)
Project "Detailed study of zigzag metal gratings"
The term “metamaterial” has recently been coined to describe metallic structures patterned on the subwavelength scale and that exhibit novel electromagnetic properties. Perhaps the simplest example of a metamaterial is a metallic diffraction grating. In this EPSRC funded project I will study for the first time "zigzag gratings". These present an entirely new, and as yet completely overlooked type of metamaterial, the study of which will draw together the highly topical and active research areas of plasmonics and metamaterials. -
Microwave Photonics - Publications
Rm: G31 Tel: 4187
Email: hjr203
|
Evgeny Sirotkin
PhD Student (Feodor Ogrin)
Publications
Rm: G29 Tel: 4186
Email: e.sirotkin
|
Ciarán Stewart
PhD Student (Roy Sambles)
Project “Differential Surface Plasmon Resonance Imaging”
The phenomenon of surface plasmon resonance has been utilised in various bio-chemical sensing applications for many years. The aim of this work is to use a pixelated phase sensitive detector to develop a system capable of imaging the binding of very low concentrations of many different proteins to a functionalised surface simultaneously. - Publications
Rm: G31 Tel: 4187
Email: c.stewart
|
Edmund Stone
PhD Student (Euan Hendry)
Project “Semiconductor Surface Plasmons: A Route to Tunable THz Devices and Sensors”
This project is concerned with the modelling and fabrication of structures which support surface plasmons in the THz region of frequencies. These structures allow fields to be enhanced over a small region, which is useful as many chemicals have a very high response to THz radiation. - THz Photonics
Rm: Basement Tel: 4156
Email: E.K.Stone
|
Melita Taylor
PhD Student (Sambles/Hibbins)
Project “Patterned thin layers of metal-dielectric composite materials for microwave absorption”
The aim is to develop an analytical model to characterize the EM properties of 3D random composite materials for areas such as the aerospace, defence and medical industries. The relationship between the material parameters of the individual constituents, particle geometry, spatial arrangement and the concentration of particulates and how they determine the effective properties of the composite material is investigated. - Microwave Photonics - Publications
Rm: G31 Tel: 4187
Email: mct206
|
Add @exeter.ac.uk to email addresses given.
Telephone numbers are given in the format +44 (0) 1392 72-XXXX for dialling externally. XXXX is the internal extension given. Fax: +44 (0) 1392 724111. |
