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Manipulating the Conformation of Single Organometallic Chains on Au(111) (2013)
Journal Article
Saywell, A., Greń, W., Franc, G., Gourdon, A., Bouju, X., & Grill, L. (2014). Manipulating the Conformation of Single Organometallic Chains on Au(111). Journal of Physical Chemistry C, 118(3), 1719-1728. https://doi.org/10.1021/jp409323g

The conformations of organometallic polymers formed via the bottom-up assembly of monomer units on a metal surface are investigated, and the relationship between the adsorption geometry of the individual monomer units, the conformational structure of... Read More about Manipulating the Conformation of Single Organometallic Chains on Au(111).

Ensemble fermions for electroweak dynamics and the fermion preheating temperature (2013)
Journal Article
Mou, Z.-G., Tranberg, A., & Saffin, P. M. (2013). Ensemble fermions for electroweak dynamics and the fermion preheating temperature. Journal of High Energy Physics, 2013(11), https://doi.org/10.1007/JHEP11%282013%29097

We refine the implementation of ensemble fermions for the electroweak sector of the Standard Model, introduced previously. We consider the behavior of different observables as the size of the ensemble is increased and show that the dynamics converges... Read More about Ensemble fermions for electroweak dynamics and the fermion preheating temperature.

Scanning probe image wizard: a toolbox for automated scanning probe microscopy data analysis (2013)
Journal Article
Stirling, J., Woolley, R., & Moriarty, P. (2013). Scanning probe image wizard: a toolbox for automated scanning probe microscopy data analysis. Review of Scientific Instruments, 84(113701), Article 113701. https://doi.org/10.1063/1.4827076

We describe SPIW (scanning probe image wizard), a new image processing toolbox for SPM (scanning probe microscope) images. SPIW can be used to automate many aspects of SPM data analysis, even for images with surface contamination and step edges prese... Read More about Scanning probe image wizard: a toolbox for automated scanning probe microscopy data analysis.

Interplay between Coulomb and Jahn-Teller effects in icosahedral systems with triplet electronic states coupled to h-type vibrations (2013)
Journal Article
Alqannas, H. S., Lakin, A. J., Farrow, J. A., & Dunn, J. L. (2013). Interplay between Coulomb and Jahn-Teller effects in icosahedral systems with triplet electronic states coupled to h-type vibrations. Physical Review B, 88(16), https://doi.org/10.1103/PhysRevB.88.165430

We will consider the role played by electron-vibration and electron-electron interactions, through Jahn-Teller (JT) and Coulomb interactions, respectively, in icosahedral systems in which triplet electronic states are coupled to hg-type vibrations. S... Read More about Interplay between Coulomb and Jahn-Teller effects in icosahedral systems with triplet electronic states coupled to h-type vibrations.

Novel MRI tests of orocecal transit time and whole gut transit time: studies in normal subjects (2013)
Journal Article
Chaddock, G., Lam, C., Hoad, C., Costigan, C., Cox, E. F., Placidi, E., …Spiller, R. C. (2014). Novel MRI tests of orocecal transit time and whole gut transit time: studies in normal subjects. Neurogastroenterology and Motility, 26(2), 205-214. https://doi.org/10.1111/nmo.12249

Background: Colonic transit tests are used to manage patients with Functional Gastrointestinal Disorders. Some tests used expose patients to ionizing radiation. The aim of this study was to compare novel magnetic resonance imaging (MRI) tests for mea... Read More about Novel MRI tests of orocecal transit time and whole gut transit time: studies in normal subjects.

Pulmonary MRI contrast using Surface Quadrupolar Relaxation (SQUARE) of hyperpolarized 83Kr (2013)
Journal Article
Six, J. S., Hughes-Riley, T., Lilburn, D. M., Dorkes, A. C., Stupic, K. F., Shaw, D. E., …Meersmann, T. (2014). Pulmonary MRI contrast using Surface Quadrupolar Relaxation (SQUARE) of hyperpolarized 83Kr. Magnetic Resonance Imaging, 32(1), 48-53. https://doi.org/10.1016/j.mri.2013.08.007

Hyperpolarized 83Kr has previously been demonstrated to enable MRI contrast that is sensitive to the chemical composition of the surface in a porous model system. Methodological advances have lead to a substantial increase in the 83Kr hyperpolarizati... Read More about Pulmonary MRI contrast using Surface Quadrupolar Relaxation (SQUARE) of hyperpolarized 83Kr.

Monitoring the mineralisation of bone nodules in vitro by space- and time-resolved Raman micro-spectroscopy. (2013)
Journal Article
Ghita, A., Pascut, F. C., Sottile, V., & Notingher, I. (2013). Monitoring the mineralisation of bone nodules in vitro by space- and time-resolved Raman micro-spectroscopy. Analyst, 139(1), https://doi.org/10.1039/C3AN01716H

Raman microscopy was used as a label-free method to study the mineralisation of bone nodules formed by mesenchymal stem cells cultured in osteogenic medium in vitro. Monitoring individual bone nodules over 28 days revealed temporal and spatial change... Read More about Monitoring the mineralisation of bone nodules in vitro by space- and time-resolved Raman micro-spectroscopy..

New measurements of the ionizing ultraviolet background over 2 < z < 5 and implications for hydrogen reionization (2013)
Journal Article
Becker, G. D., & Bolton, J. S. (2013). New measurements of the ionizing ultraviolet background over 2 < z < 5 and implications for hydrogen reionization. Monthly Notices of the Royal Astronomical Society, 436(2), 1023-1039. https://doi.org/10.1093/mnras/stt1610

We present new measurements of the intensity of the ionizing ultraviolet background and the global emissivity of ionizing photons over 2 < z < 5. Our results are based on a suite of updated measurements of physical properties of the high-redshift int... Read More about New measurements of the ionizing ultraviolet background over 2 < z < 5 and implications for hydrogen reionization.

Gravitational waves from oscillon preheating (2013)
Journal Article
Zhou, S.-Y., Copeland, E. J., Easther, R., Finkel, H., Mou, Z.-G., & Saffin, P. M. (2013). Gravitational waves from oscillon preheating. Journal of High Energy Physics, 2013, Article 26. https://doi.org/10.1007/JHEP10%282013%29026

Oscillons are long-lived, localized excitations of nonlinear scalar fields which may be copiously produced during preheating after inflation, leading to a possible oscillon-dominated phase in the early Universe. For example, this can happen after axi... Read More about Gravitational waves from oscillon preheating.

Diagnosis of tumors during tissue-conserving surgery with integrated autofluorescence and Raman scattering microscopy (2013)
Journal Article
Kong, K., Rowlands, C. J., Varma, S., Perkins, W., Leach, I. H., Koloydenko, A. A., …Notingher, I. (2013). Diagnosis of tumors during tissue-conserving surgery with integrated autofluorescence and Raman scattering microscopy. Proceedings of the National Academy of Sciences, 110(38), https://doi.org/10.1073/pnas.1311289110

Tissue-conserving surgery is used increasingly in cancer treatment. However, one of the main challenges in this type of surgery is the detection of tumor margins. Histopathology based on tissue sectioning and staining has been the gold standard for c... Read More about Diagnosis of tumors during tissue-conserving surgery with integrated autofluorescence and Raman scattering microscopy.

Paramagnetic, near-infrared fluorescent Mn-doped PbS colloidal nanocrystals (2013)
Journal Article
Turyanska, L., Moro, F., Knott, A. N., Fay, M. W., Bradshaw, T. D., & Patanè, A. (2013). Paramagnetic, near-infrared fluorescent Mn-doped PbS colloidal nanocrystals. Particle and Particle Systems Characterization, 30(11), https://doi.org/10.1002/ppsc.201300184

Mn-doped PbS colloidal nanocrystals in aqueous solution are paramagnetic and optically active in the technologically important biological window between 1.2 and 0.8 μm. Cytoxicity studies show that exposure of human cell lines to the nanoparticles at... Read More about Paramagnetic, near-infrared fluorescent Mn-doped PbS colloidal nanocrystals.

Reference layer artefact subtraction (RLAS): A novel method of minimizing EEG artefacts during simultaneous fMRI (2013)
Journal Article
Chowdhury, M. E., Mullinger, K. J., Glover, P., & Bowtell, R. W. (2014). Reference layer artefact subtraction (RLAS): A novel method of minimizing EEG artefacts during simultaneous fMRI. NeuroImage, 84, 307-319. https://doi.org/10.1016/j.neuroimage.2013.08.039

Large artefacts compromise EEG data quality during simultaneous fMRI. These artefact voltages pose heavy demands on the bandwidth and dynamic range of EEG amplifiers and mean that even small fractional variations in the artefact voltages give rise to... Read More about Reference layer artefact subtraction (RLAS): A novel method of minimizing EEG artefacts during simultaneous fMRI.

Poststimulus undershoots in cerebral blood flow and BOLD fMRI responses are modulated by poststimulus neuronal activity (2013)
Journal Article
Mullinger, K. J., Mayhew, S. D., Bagshaw, A. P., Bowtell, R., & Francis, S. T. (2013). Poststimulus undershoots in cerebral blood flow and BOLD fMRI responses are modulated by poststimulus neuronal activity. Proceedings of the National Academy of Sciences, 110(33), https://doi.org/10.1073/pnas.1221287110

fMRI is the foremost technique for noninvasive measurement of human brain function. However, its utility is limited by an incomplete understanding of the relationship between neuronal activity and the hemodynamic response. Though the primary peak of... Read More about Poststimulus undershoots in cerebral blood flow and BOLD fMRI responses are modulated by poststimulus neuronal activity.

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.