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Adiabatic and isocurvature perturbation projections in multi-field inflation (2013)
Journal Article
Gordon, C., & Saffin, P. M. (2013). Adiabatic and isocurvature perturbation projections in multi-field inflation. Journal of Cosmology and Astroparticle Physics, 2013(8), Article 021. https://doi.org/10.1088/1475-7516/2013/08/021

Current data are in good agreement with the predictions of single field inflation. However, the hemispherical asymmetry seen in the cosmic microwave background data, may hint at a potential problem. Generalizing to multi-field models may provide one... Read More about Adiabatic and isocurvature perturbation projections in multi-field inflation.

Comparative study of in situ N2 rotational Raman spectroscopy methods for probing energy thermalisation processes during spin-exchange optical pumping (2013)
Journal Article
Newton, H., Walkup, L. L., Whiting, N., West, L., Carriere, J., Havermeyer, F., …Barlow, M. J. (2014). Comparative study of in situ N2 rotational Raman spectroscopy methods for probing energy thermalisation processes during spin-exchange optical pumping. Applied Physics B, 115(2), 167-172. https://doi.org/10.1007/s00340-013-5588-x

Spin-exchange optical pumping (SEOP) has been widely used to produce enhancements in nuclear spin polarisation for hyperpolarised noble gases. However, some key fundamental physical processes underlying SEOP remain poorly understood, particularly in... Read More about Comparative study of in situ N2 rotational Raman spectroscopy methods for probing energy thermalisation processes during spin-exchange optical pumping.

Dynamics of a vertical cavity quantum cascade phonon laser structure (2013)
Journal Article
Maryam, W., Akimov, A. V., Campion, R., & Kent, A. (2013). Dynamics of a vertical cavity quantum cascade phonon laser structure. Nature Communications, 4, Article 2184. https://doi.org/10.1038/ncomms3184

Driven primarily by scientific curiosity, but also by the potential applications of intense sources of coherent sound, researchers have targeted the phonon laser (saser) since the invention of the optical laser over 50 years ago. Here we fabricate a... Read More about Dynamics of a vertical cavity quantum cascade phonon laser structure.

Duality and decay of macroscopic F-strings (2013)
Journal Article
Skliros, D. P., Copeland, E. J., & Saffin, P. M. (2013). Duality and decay of macroscopic F-strings. Physical Review Letters, 111(4), Article 041601. https://doi.org/10.1103/PhysRevLett.111.041601

We study the decay of fundamental string loops of arbitrary size L/min(n,m)≫√α′, labeled by (n, m; λn, ¯λm), where n, m correspond to left- and right-mover harmonics and λn, ¯λm to polarization tensors, and find that a description in terms of the rec... Read More about Duality and decay of macroscopic F-strings.

Magnetostrictive thin films for microwave spintronics (2013)
Journal Article
Parkes, D., Shelford, L., Wadley, P., Holy, V., Wang, M., Hindmarch, A., …Rushforth, A. (2013). Magnetostrictive thin films for microwave spintronics. Scientific Reports, 3, Article 2220. https://doi.org/10.1038/srep02220

Multiferroic composite materials, consisting of coupled ferromagnetic and piezoelectric phases, are of great importance in the drive towards creating faster, smaller and more energy efficient devices for information and communications technologies. S... Read More about Magnetostrictive thin films for microwave spintronics.

Coherent time evolution and boundary conditions of two-photon quantum walks in waveguide arrays (2013)
Journal Article
D. A. Meinecke, J., Poulios, K., Politi, A., C. F. Matthews, J., Peruzzo, A., Ismail, N., …G. Thompson, M. (2013). Coherent time evolution and boundary conditions of two-photon quantum walks in waveguide arrays. Physical Review A, 88(1), Article 012308. https://doi.org/10.1103/PhysRevA.88.012308

Multi-photon quantum walks in integrated optics are an attractive controlled quantum system, that can mimic less readily accessible quantum systems and exhibit behavior that cannot in general be accurately replicated by classical light without an exp... Read More about Coherent time evolution and boundary conditions of two-photon quantum walks in waveguide arrays.

Maternal smoking during pregnancy and fetal organ growth: a magnetic resonance imaging study (2013)
Journal Article
Anblagan, D., Jones, N. W., Costigan, C., Parker, A. J., Allcock, K., Aleong, R., …Gowland, P. A. (2013). Maternal smoking during pregnancy and fetal organ growth: a magnetic resonance imaging study. PLoS ONE, 8(6), Article e67223. https://doi.org/10.1371/journal.pone.0067223

Objective: To study whether maternal cigarette smoking during pregnancy is associated with alterations in the growth of fetal lungs, kidneys, liver, brain, and placenta. Design: A case-control study, with operators performing the image analysis bli... Read More about Maternal smoking during pregnancy and fetal organ growth: a magnetic resonance imaging study.

Identifying the sources of the pulse artefact in EEG recordings made inside an MR scanner (2013)
Journal Article
Mullinger, K. J., Havenhand, J., & Bowtell, R. W. (2013). Identifying the sources of the pulse artefact in EEG recordings made inside an MR scanner. NeuroImage, 71(1), https://doi.org/10.1016/j.neuroimage.2012.12.070

EEG recordings made during concurrent fMRI are confounded by the pulse artefact (PA), which although smaller than the gradient artefact is often more problematic because of its variability over multiple cardiac cycles. A better understanding of the P... Read More about Identifying the sources of the pulse artefact in EEG recordings made inside an MR scanner.

Resonant tunnelling and negative differential conductance in graphene transistors (2013)
Journal Article
Britnell, L., Gorbachev, R., Geim, A., Ponomarenko, L., Mishchenko, A., Greenaway, M., …Eaves, L. (2013). Resonant tunnelling and negative differential conductance in graphene transistors. Nature Communications, 4, Article 1794. https://doi.org/10.1038/ncomms2817

The chemical stability of graphene and other free-standing two-dimensional crystals means that they can be stacked in different combinations to produce a new class of functional materials, designed for specific device applications. Here we report res... Read More about Resonant tunnelling and negative differential conductance in graphene transistors.

Spontaneous orbiting of two spheres levitated in a vibrated liquid (2013)
Journal Article
Pacheco Martinez, H., Liao, L., Hill, R., Swift, M. R., & Bowley, R. (2013). Spontaneous orbiting of two spheres levitated in a vibrated liquid. Physical Review Letters, 110(15), Article 154501. https://doi.org/10.1103/PhysRevLett.110.154501

In the absence of gravity, particles can form a suspension in a liquid irrespective of the difference in density between the solid and the liquid. If such a suspension is subjected to vibration there is relative motion between the particles and the f... Read More about Spontaneous orbiting of two spheres levitated in a vibrated liquid.

Regional structural differences across functionally parcellated Brodmann areas of human primary somatosensory cortex (2013)
Journal Article
Sánchez-Panchuelo, R., Besle, J., Mougin, O., Gowland, P., Bowtell, R., Schluppeck, D., & Francis, S. (2014). Regional structural differences across functionally parcellated Brodmann areas of human primary somatosensory cortex. NeuroImage, 93 Pt 2, 221-230. https://doi.org/10.1016/j.neuroimage.2013.03.044

Ultra-high-field (UHF) MRI is ideally suited for structural and functional imaging of the brain. High-resolution structural MRI can be used to map the anatomical boundaries between functional domains of the brain by identifying changes related to the... Read More about Regional structural differences across functionally parcellated Brodmann areas of human primary somatosensory cortex.

Observing fermionic statistics with photons in arbitrary processes (2013)
Journal Article
C. F. Matthews, J., Poulios, K., D. A. Meinecke, J., Politi, A., Peruzzo, A., Ismail, N., …L. O'Brien, J. (2013). Observing fermionic statistics with photons in arbitrary processes. Scientific Reports, 3, Article 1539. https://doi.org/10.1038/srep01539

In contrast to classical physics, quantum mechanics divides particles into two classes-bosons and fermions-whose exchange statistics dictate the dynamics of systems at a fundamental level. In two dimensions quasi-particles known as 'anyons' exhibit f... Read More about Observing fermionic statistics with photons in arbitrary processes.

On the rapid demise of Lyman-alpha emitters at z>7 due to the increasing incidence of optically thick absorption systems (2013)
Journal Article
S. Bolton, J., & G. Haehnelt, M. (2013). On the rapid demise of Lyman-alpha emitters at z>7 due to the increasing incidence of optically thick absorption systems. Monthly Notices of the Royal Astronomical Society, 429(2), 1695–1704. https://doi.org/10.1093/mnras/sts455

A variety of independent observational studies have now reported a significant decline in the fraction of Lyman-break galaxies which exhibit Ly-a emission over the redshift interval z=6-7. In combination with the strong damping wing extending redward... Read More about On the rapid demise of Lyman-alpha emitters at z>7 due to the increasing incidence of optically thick absorption systems.

Effects of various food ingredients on gall bladder emptying (2013)
Journal Article
Marciani, L., Cox, E., Hoad, C., Totman, J. J., Costigan, C., Singh, G., …Spiller, R. C. (2013). Effects of various food ingredients on gall bladder emptying. European Journal of Clinical Nutrition, 67(11), https://doi.org/10.1038/ejcn.2013.168

Background/objectives: The emptying of the gall bladder in response to feeding is pivotal for the digestion of fat, but the role of various food ingredients in contracting the gall bladder postprandially is not well understood. We hypothesized that d... Read More about Effects of various food ingredients on gall bladder emptying.

Mechanical stiffening of porphyrin nanorings through supramolecular columnar stacking (2013)
Journal Article
Svatek, S. A., Perdigão, L. M., Stannard, A., Wieland, M. B., Kondratuk, D. V., Anderson, H. L., …Beton, P. H. (2013). Mechanical stiffening of porphyrin nanorings through supramolecular columnar stacking. Nano Letters, 13(7), https://doi.org/10.1021/nl4017557

Solvent-induced aggregates of nanoring cyclic polymers may be transferred by electrospray deposition to a surface where they adsorb as threedimensional columnar stacks. The observed stack height varies from single rings to four stacked rings with a l... Read More about Mechanical stiffening of porphyrin nanorings through supramolecular columnar stacking.