All Outputs (704)

Broadband and broadangle SPP antennas based on plasmonic crystals with linear chirp (2012)
Journal Article
Bouillard, J. S., Vilain, S., Dickson, W., Wurtz, G. A., & Zayats, A. V. (2012). Broadband and broadangle SPP antennas based on plasmonic crystals with linear chirp. Scientific reports, 2(1), Article 829. https://doi.org/10.1038/srep00829

Plasmonic technology relies on the coupling of light to surface electromagnetic modes on smooth or structured metal surfaces. While some applications utilise the resonant nature of surface polaritons, others require broadband characteristics. We demo... Read More about Broadband and broadangle SPP antennas based on plasmonic crystals with linear chirp.

The WiggleZ Dark Energy Survey: Final data release and cosmological results (2012)
Journal Article
Parkinson, D., Riemer-Sørensen, S., Blake, C., Poole, G. B., Davis, T. M., Brough, S., Colless, M., Contreras, C., Couch, W., Croom, S., Croton, D., Drinkwater, M. J., Forster, K., Gilbank, D., Gladders, M., Glazebrook, K., Jelliffe, B., Jurek, R. J., Li, I. H., Madore, B., …Yee, H. K. (2012). The WiggleZ Dark Energy Survey: Final data release and cosmological results. Physical Review D - Particles, Fields, Gravitation and Cosmology, 86(10), Article 103518. https://doi.org/10.1103/PhysRevD.86.103518

This paper presents cosmological results from the final data release of the WiggleZ Dark Energy Survey. We perform full analyses of different cosmological models using the WiggleZ power spectra measured at z=0.22, 0.41, 0.60, and 0.78, combined with... Read More about The WiggleZ Dark Energy Survey: Final data release and cosmological results.

Galaxy And Mass Assembly (GAMA): Estimating galaxy group masses via caustic analysis (2012)
Journal Article
Alpaslan, M., Robotham, A. S., Driver, S., Norberg, P., Peacock, J. A., Baldry, I., Bland-Hawthorn, J., Brough, S., Hopkins, A. M., Kelvin, L. S., Liske, J., Loveday, J., Merson, A., Nichol, R. C., & Pimbblet, K. (2012). Galaxy And Mass Assembly (GAMA): Estimating galaxy group masses via caustic analysis. Monthly notices of the Royal Astronomical Society, 426(4), 2832-2846. https://doi.org/10.1111/j.1365-2966.2012.21020.x

We have generated complementary halo mass estimates for all the groups in the Galaxy And Mass Assembly Galaxy Group Catalogue (GAMA G 3 Cv1) using a modified caustic mass estimation algorithm, originally developed by Diaferio & Geller. We calibrate... Read More about Galaxy And Mass Assembly (GAMA): Estimating galaxy group masses via caustic analysis.

Properties of the 15 February 2011 Flare Seismic Sources (2012)
Journal Article
Zharkov, S., Green, L. M., Matthews, S. A., & Zharkova, V. V. (2013). Properties of the 15 February 2011 Flare Seismic Sources. Solar Physics, 284(2), 315-327. https://doi.org/10.1007/s11207-012-0169-4

The first near-side X-class flare of Solar Cycle 24 occurred in February 2011 (SOL2011-02-05T01:55) and produced a very strong seismic response in the photosphere. One sunquake was reported by Kosovichev (Astrophys. J. Lett. 734, L15, 2011), followed... Read More about Properties of the 15 February 2011 Flare Seismic Sources.

Plunging fireworks: why do infalling galaxies light up on the outskirts of clusters? (2012)
Journal Article
Mahajan, S., Raychaudhury, S., & Pimbblet, K. A. (2012). Plunging fireworks: why do infalling galaxies light up on the outskirts of clusters?. Monthly notices of the Royal Astronomical Society, 427(2), 1252-1265. https://doi.org/10.1111/j.1365-2966.2012.22059.x

Integrated star formation rate (SFR) and specific star formation rate (SFR/M*), derived from the spectroscopic data obtained by the Sloan Digital Sky Survey (SDSS) data release 4 (DR4), are used to show that the star formation activity in galaxies (M... Read More about Plunging fireworks: why do infalling galaxies light up on the outskirts of clusters?.

Classical spin model of the relaxation dynamics of rare-earth doped permalloy (2012)
Journal Article
Ellis, M. O., Ostler, T. A., & Chantrell, R. W. (2012). Classical spin model of the relaxation dynamics of rare-earth doped permalloy. Physical review B: Condensed matter and materials physics, 86(17), Article 174418. https://doi.org/10.1103/PhysRevB.86.174418

In this paper, the ultrafast dynamic behavior of rare-earth doped permalloy is investigated using an atomistic spin model with Langevin dynamics. In line with experimental work, the effective Gilbert damping is calculated from transverse relaxation s... Read More about Classical spin model of the relaxation dynamics of rare-earth doped permalloy.

Galaxy and mass assembly (GAMA): The mass-metallicity relationship (2012)
Journal Article
Foster, C., Hopkins, A. M., Gunawardhana, M., Lara-López, M. A., Sharp, R. G., Steele, O., Taylor, E. N., Driver, S. P., Baldry, I. K., Bamford, S. P., Liske, J., Loveday, J., Norberg, P., Peacock, J. A., Alpaslan, M., Bauer, A. E., Bland-Hawthorn, J., Brough, S., Cameron, E., Colless, M., …Wijesinghe, D. (2012). Galaxy and mass assembly (GAMA): The mass-metallicity relationship. Astronomy and Astrophysics, 547, Article A79. https://doi.org/10.1051/0004-6361/201220050

Context. The mass-metallicity relationship (MMR) of star-forming galaxies is well-established, however there is still some disagreement with respect to its exact shape and its possible dependence on other observables. Aims.We measure the MMR in the G... Read More about Galaxy and mass assembly (GAMA): The mass-metallicity relationship.

Properties of simulated Milky Way-mass galaxies in loose group and field environments (2012)
Journal Article
Few, C. G., Gibson, B. K., Courty, S., Michel-Dansac, L., Brook, C. B., & Stinson, G. S. (2012). Properties of simulated Milky Way-mass galaxies in loose group and field environments. Astronomy and Astrophysics, 547, Article ARTN A63. https://doi.org/10.1051/0004-6361/201219649

Aims. We test the validity of comparing simulated field disk galaxies with the empirical properties of systems situated within environments more comparable to loose groups, including the Milky Way's Local Group. Methods. Cosmological simulations of M... Read More about Properties of simulated Milky Way-mass galaxies in loose group and field environments.

Calibrating an updated smoothed particle hydrodynamics scheme within GCD+ (2012)
Journal Article
Kawata, D., Okamoto, T., Gibson, B. K., Barnes, D. J., & Cen, R. (2013). Calibrating an updated smoothed particle hydrodynamics scheme within GCD+. Monthly notices of the Royal Astronomical Society, 428(3), 1968-1979. https://doi.org/10.1093/mnras/sts161

We adapt a modern scheme of smoothed particle hydrodynamics (SPH) to our treeN-body/SPH galactic chemodynamics code GCD+. The applied scheme includes implementations of the artificial viscosity switch and artificial thermal conductivity proposed by M... Read More about Calibrating an updated smoothed particle hydrodynamics scheme within GCD+.

The role of stellar mass and environment for cluster blue fraction, AGN fraction and star formation indicators from a targeted analysis of Abell 1691 (2012)
Journal Article
Pimbblet, K. A., & Jensen, P. C. (2012). The role of stellar mass and environment for cluster blue fraction, AGN fraction and star formation indicators from a targeted analysis of Abell 1691. Monthly notices of the Royal Astronomical Society, 426(2), 1632-1646. https://doi.org/10.1111/j.1365-2966.2012.21855.x

We present an analysis of the galaxy population of the intermediate X-ray luminosity galaxy cluster, Abell 1691, from Sloan Digital Sky Survey (SDSS) and Galaxy Zoo data to elucidate the relationships between environment and galaxy stellar mass for a... Read More about The role of stellar mass and environment for cluster blue fraction, AGN fraction and star formation indicators from a targeted analysis of Abell 1691.

The NuGrid Research Platform: A Comprehensive Simulation Approach for Nuclear Astrophysics (2012)
Journal Article
Pignatari, M., & Herwig, F. (2012). The NuGrid Research Platform: A Comprehensive Simulation Approach for Nuclear Astrophysics. Nuclear physics news : a publication of NuPECC and EPS-NPB, 22(4), 18-23. https://doi.org/10.1080/10619127.2012.710142

Since the seminal works by BBFH [1] and Cameron et al. [2] a lot of progress in our understanding of the formation of the elements in stars has been made. Increasing fidelity of spectroscopic observations of stellar abundances as well as high-precis... Read More about The NuGrid Research Platform: A Comprehensive Simulation Approach for Nuclear Astrophysics.

Tidal interactions at the edge of the Local Group: New evidence for tidal features in the antlia Dwarf galaxy (2012)
Journal Article
Penny, S. J., Pimbblet, K. A., Conselice, C. J., Brown, M. J., Grützbauch, R., & Floyd, D. J. (2012). Tidal interactions at the edge of the Local Group: New evidence for tidal features in the antlia Dwarf galaxy. Astrophysical journal. Letters, 758(2), Article L32. https://doi.org/10.1088/2041-8205/758/2/L32

Using deep B-band imaging down to μ B = 26 mag arcsec -2 , we present evidence for tidal tails in the Antlia Dwarf galaxy, one of the most distant members of the Local Group. This elongation is in the direction of Antlia's nearest neighbor, the Magel... Read More about Tidal interactions at the edge of the Local Group: New evidence for tidal features in the antlia Dwarf galaxy.

Negative differential resistance associated with hot phonons (2012)
Journal Article
Dyson, A., & Ridley, B. K. (2012). Negative differential resistance associated with hot phonons. Journal of applied physics, 112(6), 063707. https://doi.org/10.1063/1.4754012

We predict the existence of a hot-phonon negative differential resistance (NDR) in GaN. We show that this is a consequence of a wave-vector dependence of lifetime caused by the effect of coupled plasmon-phonons. Anti-screened long-wavelength modes ha... Read More about Negative differential resistance associated with hot phonons.

Low-temperature plasmonics of metallic nanostructures (2012)
Journal Article
Bouillard, J. S. G., Dickson, W., O’Connor, D. P., Wurtz, G. A., & Zayats, A. V. (2012). Low-temperature plasmonics of metallic nanostructures. Nano Letters, 12(3), 1561-1565. https://doi.org/10.1021/nl204420s

The requirements for spatial and temporal manipulation of electromagnetic fields on the nanoscale have recently resulted in an ever-increasing use of plasmonics for achieving various functionalities with superior performance to those available from c... Read More about Low-temperature plasmonics of metallic nanostructures.

Ultrafast heating as a sufficient stimulus for magnetization reversal in a ferrimagnet (2012)
Journal Article
Ostler, T. A., Barker, J., Evans, R. F., Chantrell, R. W., Atxitia, U., Chubykalo-Fesenko, O., …Kimel, A. V. (2012). Ultrafast heating as a sufficient stimulus for magnetization reversal in a ferrimagnet. Nature communications, 3, Article 666. https://doi.org/10.1038/ncomms1666

The question of how, and how fast, magnetization can be reversed is a topic of great practical interest for the manipulation and storage of magnetic information. It is generally accepted that magnetization reversal should be driven by a stimulus repr... Read More about Ultrafast heating as a sufficient stimulus for magnetization reversal in a ferrimagnet.

Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae) (2012)
Journal Article
Anyon, M. J., Orchard, M. J., Buzza, D. M. A., Humphries, S., & Kohonen, M. M. (2012). Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae). The journal of experimental biology, 215(4), 605-616. https://doi.org/10.1242/jeb.063578

Tarsal adhesive pads are crucial for the ability of insects to traverse their natural environment. Previous studies have demonstrated that for both hairy and smooth adhesive pads, significant reduction in adhesion can occur because of contamination o... Read More about Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae).

An avatar-based help system for web-portals (2011)
Journal Article
Lang, H., Mosch, C., Boegel, B., Minker, W., & Benoit, D. M. (2011). An avatar-based help system for web-portals. Lecture notes in computer science, 6762(PART 2), 537-546. https://doi.org/10.1007/978-3-642-21605-3_59

In this paper we present an avatar-based help system for web-portals that should provide various kinds of user assistance. Along with helping users on individual elements of a web page, it is also capable to offer step-by-step guidance supporting use... Read More about An avatar-based help system for web-portals.

Precise chemical, electronic, and magnetic structure of binuclear complexes studied by means of X-ray spectroscopies and theoretical methods (2011)
Journal Article
Kuepper, K., Benoit, D. M., Wiedwald, U., Mögele, F., Meyering, A., Neumann, M., Kappler, J.-P., Joly, L., Weidle, S., Rieger, B., & Ziemann, P. (2011). Precise chemical, electronic, and magnetic structure of binuclear complexes studied by means of X-ray spectroscopies and theoretical methods. Journal of physical chemistry. C, 115(50), 25030-25039. https://doi.org/10.1021/jp2069804

We investigate two planar complexes MnNi and CoNi (see Scheme 1) by X-ray photoelec- tron spectroscopy (XPS) and ultralow-temperature X-ray magnetic circular dichroism (XMCD). In this way the valence states as well as the presence of uncompensated ma... Read More about Precise chemical, electronic, and magnetic structure of binuclear complexes studied by means of X-ray spectroscopies and theoretical methods.

Optically-programmable nonlinear photonic component for dielectric-loaded plasmonic circuitry (2011)
Journal Article
Krasavin, A. V., Randhawa, S., Bouillard, J. S., Renger, J., Quidant, R., & Zayats, A. V. (2011). Optically-programmable nonlinear photonic component for dielectric-loaded plasmonic circuitry. Optics express, 19(25), 25222-25229. https://doi.org/10.1364/OE.19.025222

We demonstrate both experimentally and numerically a compact and efficient, optically tuneable plasmonic component utilizing a surface plasmon polariton ring resonator with nonlinearity based on trans-cis isomerization in a polymer material. We obser... Read More about Optically-programmable nonlinear photonic component for dielectric-loaded plasmonic circuitry.

Temperature dependence of the upper-branch polariton population in an organic semiconductor microcavity (2011)
Journal Article
Coles, D. M., Michetti, P., Clark, C., Adawi, A. M., & Lidzey, D. G. (2011). Temperature dependence of the upper-branch polariton population in an organic semiconductor microcavity. Physical review B: Condensed matter and materials physics, 84(20), 205214-1 - 205214-8. https://doi.org/10.1103/PhysRevB.84.205214

We explore the distribution of polaritons along the upper polariton branch of a strongly coupled organic-semiconductor microcavity as a function of temperature following nonresonant optical excitation. Measurements of polariton emission from a high-f... Read More about Temperature dependence of the upper-branch polariton population in an organic semiconductor microcavity.