Physics
Welcome to the research outputs of the University of Exeter College of Engineering, Mathematics and Physical Sciences, Department of Physics
Recent Submissions
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Mapping the magnonic landscape in patterned magnetic structures - Software
(University of Exeter, 2017)We report the development of a hybrid numerical / analytical model capable of mapping the spatially-varying distributions of the local ferromagnetic resonance (FMR) frequency and dynamic magnetic susceptibility in a wide ... -
Electro-optical properties of phosphorene quantum dots
(American Physical Society, 2017-08-25)We study electronic and optical properties of single layer phosphorene quantum dots with various shapes, sizes, and edge types (including disordered edges) subjected to an external electric field normal to the structure ... -
Intrinsic Plasmon-Phonon Interactions in Highly Doped Graphene: A Near-Field Imaging Study.
(American Chemical Society, 2017-08-15)As a two-dimensional semimetal, graphene offers clear advantages for plasmonic applications over conventional metals, such as stronger optical field confinement, in situ tunability, and relatively low intrinsic losses. ... -
Two-dimensional Dirac particles in a Pöschl-Teller waveguide
(Nature Publishing Group, 2017-09-14)We obtain exact solutions to the two-dimensional (2D) Dirac equation for the one-dimensional Pöschl-Teller potential which contains an asymmetry term. The eigenfunctions are expressed in terms of Heun confluent functions, ... -
Compressed sensing with near-field THz radiation
(Optical Society of America, 2017-08-17)We demonstrate a form of near-field terahertz (THz) imaging that is compatible with compressed sensing algorithms. By spatially photomodulating THz pulses using a set of shaped binary optical patterns and employing a ... -
High cadence, high resolution spectroscopic observations of Herbig stars HD 98922 and V1295 Aquila
(American Astronomical Society, 2017)Recent observational work has indicated mechanisms for accretion and out ow in Herbig Ae/Be star-disk systems may di er from magnetospheric accretion as it is thought to occur in T Tauri star-disk systems. In this work, ... -
A new classification system for degenerative spondylolisthesis of the lumbar spine
(Springer Verlag for EuroSpine, 2017-08-23)PURPOSE: There is no consensus for a comprehensive analysis of degenerative spondylolisthesis of the lumbar spine (DSLS). A new classification system for DSLS based on sagittal alignment was proposed. Its clinical relevance ... -
Mapping the magnonic landscape in patterned magnetic structures - article
(American Physical Society, 2017)We report the development of a hybrid numerical / analytical model capable of mapping the spatially-varying distributions of the local ferromagnetic resonance (FMR) frequency and dynamic magnetic susceptibility in a wide ... -
Spin wave propagation in a uniformly biased curved magnonic waveguide
(American Physical Society, 2017-08-01)Using Brillouin light scattering microscopy and micromagnetic simulations, we study the propagation and transformation of magnetostatic spin waves across uniformly biased curved magnonic waveguides. Our results demonstrate ... -
Exploring sequence space in search of functional enzymes using microfluidic droplets
(Elsevier for Current Opinion, 2017-04-05)Screening of enzyme mutants in monodisperse picoliter compartments, generated at kilohertz speed in microfluidic devices, is coming of age. After a decade of proof-of-principle experiments, workflows have emerged that ... -
Mimicking glide-symmetry dispersion with coupled slot metasurfaces - dataset
(AIP Publishing, 2017) -
Mimicking glide-symmetry dispersion with coupled slot metasurfaces
(AIP Publishing, 2017)In this Letter we demonstrate that the dispersion properties associated with glide symmetry can be achieved in systems that only possess reflection symmetry by balancing the influence of two sub-lattices. We apply this ... -
Computationally efficient analysis of extraordinary optical transmission through infinite and truncated subwavelength hole arrays
(American Physical Society, 2016-06-22)The authors present a computationally efficient technique for the analysis of extraordinary transmission through both infinite and truncated periodic arrays of slots in perfect conductor screens of negligible thickness. ... -
A qualitative quantum rate model for hydrogen transfer in soybean lipoxygenase
(AIP Publishing, 2017-09)The hydrogen transfer reaction catalysed by soybean lipoxygenase (SLO) has been the focus of intense study following observations of a high kinetic isotope effect (KIE). Today high KIEs are generally thought to indicate ... -
Designer surface plasmon dispersion on a one-dimensional periodic slot metasurface with glide symmetry (journal article)
(Optical Society of America, 2017-09-01)In this Letter, we explore the dispersion of spoof surface plasmons supported by a single-layer glide-symmetric structure. This structure consists of an infinitely long double-notched slot perforated in a metal layer. The ... -
4-dimensional functional profiling in the convulsant-treated larval zebrafish brain
(Springer Nature, 2017-07-26)Functional neuroimaging, using genetically-encoded Ca(2+) sensors in larval zebrafish, offers a powerful combination of high spatiotemporal resolution and higher vertebrate relevance for quantitative neuropharmacological ... -
Lithium depletion in solar-like stars: effect of overshooting based on realistic multi-dimensional simulations
(American Astronomical Society / IOP Publishing, 2017-08-09)We study lithium depletion in low-mass and solar-like stars as a function of time, using a new diffusion coefficient describing extra-mixing taking place at the bottom of a convective envelope. This new form is motivated ... -
Role of defect states in functionalized graphene photodetectors
(Society of Photo-optical Instrumentation Engineers (SPIE), 2017-08-24)The functionalization of graphene can enhance the optoelectronic properties of graphene, allowing the creation of highly sensitive broadband photodetectors. Presently, the role played by defects, induced by the functionalization ... -
Electro-optical properties of phosphorene quantum dots
(American Physical Society, 2017-08-25)We study the electronic and optical properties of single-layer phosphorene quantum dots with various shapes, sizes, and edge types (including disordered edges) subjected to an external electric field normal to the structure ... -
The magnitude of viscous dissipation in strongly stratified two-dimensional convection
(American Astronomical Society / IOP Publishing, 2017-08-17)Convection in astrophysical systems must be maintained against dissipation. Although the effects of dissipation are often assumed to be negligible, theory suggests that in strongly stratified convecting fluids, the dissipative ...