Now showing items 2264-2283 of 8725

  • An elastic virtual infrastructure for research applications (ELVIRA) 

    Voss, Alexander; Barker, Adam David; Asgari-Targhi, Mahboubeh; van Ballegooijen, Adriaan; Sommerville, Ian (2013-11-25) - Journal article
    Cloud computing infrastructures provide a way for researchers to source the computational and storage resources they require to conduct their work and to collaborate within distributed research teams. We provide an overview ...
  • Elastomer based electrically tunable, optical microcavities 

    Slowik, Irma; Kronenberg, Nils Michael; Franke, Markus; Fischer, Axel; Richter, Andreas; Gather, Malte Christian; Leo, Karl (2016-10-26) - Journal article
    Tunable optical elements are mostly realized by microelectromechanical systems, which require expensive and complex lithography during processing. We demonstrate an alternative device based on an electrically tunable ...
  • Electoral politics and ETA’s ceasefire 

    Argomaniz, Javier (Centre for the Study of Terrorism and Political Violence, University of St Andrews, 2011-01-24) - Journal item
    The recent Euskadi ta Alkartasuna (ETA) ceasefire declaration has been received with much interest and fanfare by the international media. The same announcement was met instead with a tangible lack of enthusiasm by Spanish ...
  • Electric field gradients of transition metal complexes from density functional theory : assessment of functionals, geometries and basis sets 

    Bjornsson, Ragnar; Buehl, Michael (2010-06) - Journal article
    Electric field gradients (EFGs) were computed for the first-row transition metal nuclei in Cr(C6H6)(CO)(3), MnO3F, Mn(CO)(5)H, MnCp(CO)(3), Co(CO)(4)H, Co(CO)(3)(NO) and VCp(CO)(4), for which experimental gas-phase data ...
  • Electrical conduction and optical properties of doped SOI Photonic Crystals 

    Cardile, Paolo; Franzo, Giorgia; Lo Savio, Roberto; Galli, Matteo; Krauss, Thomas Fraser; Priolo, Francesco; O'Faolain, Liam (2011-05) - Journal article
    We investigate the electrical properties of silicon-on-insulator (SOI) photonic crystals as a function of both doping level and air filling factor. The resistance trends can be clearly explained by the presence of a depletion ...
  • Electrical conductivity measurement in Thiel-embalmed tissue model : relevance to radiofrequency ablation 

    Wang, Z.; Luo, H.; Nick, M.; Gueorguieva, M.; Andre, P.; Baker, R.T.; McLean, D.; Brown, S.; Cuschieri, A. (2014-07-31) - Journal article
    Thiel-embalmed human cadaveric specimens are used widely for biomedical scientific investigation. This Letter reports electrical impedance measurements of Thiel-embalming solutions from 1 Hz to 32 MHz. Compared with other ...
  • Electrical transport properties of URhGe and BiPd at very low temperature 

    Barraclough, Jack Matthew (University of St Andrews, 2015-06-24) - Thesis
    URhGe has garnered interest recently as one of the few known ferromagnetic superconductors. The superconductivity in this material appears to arise from magnetic fluctuations rather than phonons, and take a triplet form ...
  • An electrically driven cavity-enhanced source of indistinguishable photons with 61% overall efficiency 

    Schlehahn, A.; Thoma, A.; Munnelly, P.; Kamp, M.; Höfling, Sven; Heindel, T.; Schneider, C.; Reitzenstein, S. (2016-04-18) - Journal article
    We report on an electrically driven efficient source of indistinguishable photons operated at pulse-repetition rates f up to 1.2 GHz. The quantum light source is based on a p-i-n-doped micropillar cavity with integrated ...
  • Electrically injected photonic-crystal nanocavities 

    Welna, Karl (University of St Andrews, 2011-11-30) - Thesis
    Nano-emitters are the new generation of laser devices. A photonic-crystal cavity, which highly confines light in small volumes, in combination with quantum-dots can enhance the efficiency and lower the threshold of this ...
  • Electrically-controlled rapid femtosecond pulse duration switching and continuous picosecond pulse duration tuning in an ultrafast Cr4+:forsterite laser 

    Crombie, C.; Walsh, D. A.; Lu, W.; Zhang, S.; Zhang, Z.; Kennedy, K.; Calvez, S.; Sibbett, W.; Brown, C. T. A. (2012-07-30) - Journal article
    We demonstrate rapid switching between picosecond and femtosecond operational regimes in a Cr4+:forsterite laser, using an electrically-contacted GaInNAs SESAM with saturable absorption characteristics controlled via the ...
  • Electro optical tuning of Tamm-plasmon exciton-polaritons 

    Gessler, J.; Baumann, V.; Emmerling, M.; Amthor, M.; Winkler, K.; Höfling, S.; Schneider, C.; Kamp, M. (2014-11-03) - Journal article
    We report on electro optical tuning of the emission from GaAs quantum wells resonantly coupled to a Tamm-plasmon mode in a hybrid metal/dielectric structure. The structures were studied via momentum resolved photoluminescence ...
  • Electro-photo-sensitive memristor for neuromorphic and arithmetic computing 

    Maier, P.; Hartmann, F.; Emmerling, M.; Schneider, C.; Kamp, M.; Höfling, S.; Worschech, L. (2016-05-17) - Journal article
    We present optically and electrically tunable conductance modifications of a site-controlled quantum-dot memristor. The conductance of the device is tuned by electron localization on a quantum dot. The control of the ...
  • Electrochemical impedance spectroscopy investigation of the anodic functionalities and processes in LSCM-CGO-Ni systems 

    Boulfrad, Samir; Nechache, A.; Cassidy, Mark; Traversa, E.; Irvine, John Thomas Sirr (Electrochemical Society, 2015) - Conference item
    Electrochemical impedance spectroscopy was used to characterize anode compositions made of (La0.75Sr0.25)0.97Cr0.5Mn0.5O3 (LSCM) and gadolinia doped ceria (CGO) with and without additional submicron Ni, or exsoluted Ni ...
  • Electrochemical metal deposition controlled by molecular assemblies 

    Bartoletti, Enrico (University of St Andrews, 2015-09-24) - Thesis
    This thesis studies the electrochemical deposition of the metals Pd and Cu on self-assembled monolayers (SAMs) formed on Au substrates. The SAMs are composed of aromatic mercaptans like 4,4′-dipyridyl disulfide or ...
  • Electrochemically informed synthesis : oxidation versus coordination of 5,6-Bis(phenylchalcogeno)acenaphthenes 

    Knight, Fergus Ross; Randall, Rebecca Amy Michele; Roemmele, Tracey L.; Boeré, René T.; Bode, Bela Ernest; Crawford, Luke; Buehl, Michael; Slawin, Alexandra Martha Zoya; Woollins, J Derek (2013-10-07) - Journal article
  • Electroluminescence from spatially confined exciton polaritons in a textured microcavity 

    Winkler, K.; Schneider, C.; Fischer, J.; Rahimi-Iman, A.; Amthor, M.; Forchel, A.; Reitzenstein, S.; Höfling, Sven; Kamp, M. (2013-01-28) - Journal article
    We report on the formation of spatially confined exciton-polaritons under electrical injection in a textured microcavity. The trapping of polaritons in the diode sample is achieved through a locally elongated GaAs microcavity ...
  • Electron acceleration above thunderclouds 

    Fuellekrug, Martin; Kolmasova, Ivana; Santolik, Ondrej; Farges, Thomas; Bor, Jozsef; Bennett, Alec; Parrot, Michel; Rison, William; Zanotti, Ferruccio; Arnone, Enrico; Mezentsev, Andrew; Lan, Radek; Uhlir, Ludek; Harrison, Giles; Soula, Serge; van der Velde, Oscar; Pincon, Jean-Louis; Helling, Christiane; Diver, Declan (2013-08-13) - Journal article
    The acceleration of electrons results in observable electromagnetic waves which can be used for remote sensing. Here, we make use of similar to 4 Hz-66 MHz radio waves emitted by two consecutive intense positive lightning ...
  • Electron cyclotron heating and current drive using the electron Bernstein modes 

    McGregor, Duncan Ekundayo (University of St Andrews, 2007) - Thesis
    Electron Bernstein waves are a mode of oscillation in a plasma, thought a candidate for providing radiofrequency heating and non-inductive current drive in spherical tokamaks. Previous studies of these modes have relied ...
  • Electron microscopic studies of growth of nanoscale catalysts and soot particles in a candle flame 

    Zhou, Wuzong; Yu, Fengjiao; Greer, Heather Frances; Jiang, Zheng; Edwards, Peter P. (2012-09) - Journal article
    Scanning electron microscopy and high-resolution transmission electron microscopy have been used to investigate non-classic crystal growth of catalytic nanoparticles, such as zeolites, perovskites, metal and alloy particles. ...
  • Electron microscopy of crystalline solids and non-classical crystal growth 

    Greer, Heather F. (University of St Andrews, 2013-11-29) - Thesis
    This project concerns the non-classical crystal growth of various porous and non-porous materials. In order to determine their crystal growth mechanism, the reaction was stopped at several different reaction times with the ...