Now showing items 290-309 of 2933

  • Can lasing at visible wavelengths be achieved using the low-loss long-range surface plasmon-polariton mode? 

    Winter, G.; Wedge, S.; Barnes, William L. (Institute of Physics and Deutsche Physikalische Gesellschaft, 2006)
    The use of emissive dye molecules as a gain medium in order to excite the low-loss long-range surface plasmon-polariton (SPP) mode on a thin silver film has previously been suggested as a method of achieving SPP lasing at ...
  • Can non-ideal magnetohydrodynamics solve the magnetic braking catastrophe? 

    Wurster, J; Price, DJ; Bate, Matthew R. (Oxford University Press (OUP), 2016-01-11)
    We investigate whether or not the low ionization fractions in molecular cloud cores can solve the 'magnetic braking catastrophe', where magnetic fields prevent the formation of circumstellar discs around young stars.We ...
  • Canonical quantization of electromagnetism in spatially dispersive media 

    Horsley, S.A.R.; Philbin, Thomas G. (IOP Publishing, 2014)
    We find the action that describes the electromagnetic field in a spatially dispersive, homogeneous medium. This theory is quantized and the Hamiltonian is diagonalized in terms of a continuum of normal modes. It is found ...
  • Canonical quantization of electromagnetism in spatially dispersive media 

    Horsley, S.A.R.; Philbin, Thomas G. (IOP Publishing, 2014)
    We find the action that describes the electromagnetic field in a spatially dispersive, homogeneous medium. This theory is quantized and the Hamiltonian is diagonalized in terms of a continuum of normal modes. It is found ...
  • Canonical quantization of macroscopic electromagnetism 

    Philbin, Thomas G. (Institute of Physics, 2010)
    Application of the standard canonical quantization rules of quantum field theory to macroscopic electromagnetism has encountered obstacles due to material dispersion and absorption. This has led to a phenomenological ...
  • Canonical quantization of the electromagnetic field interacting with a moving dielectric medium 

    Horsley, S.A.R. (American Physical Society, 2012)
    The electromagnetic field is canonically quantized in the presence of a linear, dispersive, and dissipative medium that is in uniform motion. Specifically we calculate the change in the normal modes of the coupled matter-field ...
  • Capturing energy from ventilation air methane a preliminary design for a new approach 

    Cluff, DL; Kennedy, GA; Bennett, JG; Foster, PJ (Elsevier, 2015-05-28)
    Methane is a potent greenhouse gas (GHG), discharged to the atmosphere by coalmining, the natural gas industry and natural biological processes, second only to carbon dioxide; thus, any reduction in atmospheric methane ...
  • The carbon cycle in Mexico: past, present and future of C stocks and fluxes 

    Murray-Tortarolo, G; Friedlingstein, P; Sitch, S; Jaramillo, VJ; Murguia-Flores, F; Anav, A; Liu, Y; Arneth, A; Arvanitis, A; Harper, A; Jain, A; Kato, E; Koven, C; Poulter, B; Stocker, BD; Wiltshire, A; Zaehle, S; Zeng, N (European Geosciences Union (EGU), 2016-01-15)
    We modeled the carbon (C) cycle in Mexico with a process-based approach. We used different available products (satellite data, field measurements, models and flux towers) to estimate C stocks and fluxes in the country at ...
  • The carbon cycle response to ENSO: a coupled climate–carbon cycle model study 

    Jones, Chris D.; Collins, Matthew; Cox, Peter M.; Spall, Steven A. (American Meteorological Society, 2001)
    There is significant interannual variability in the atmospheric concentration of carbon dioxide (CO2) even when the effect of anthropogenic sources has been accounted for. This variability is well correlated with the El ...
  • Carbon fibres with ordered graphitic-like aggregate structures from a regenerated cellulose fibre precursor 

    Lewandowska, AE; Soutis, C; Savage, L; Eichhorn, Stephen J. (Elsevier, 2015-09-08)
    The production and characterisation of low modulus carbon fibres is reported from a commercially available regenerated cellulose fibre (CordenkaTM). The fibres were heat treated before the graphitisation at a temperature ...
  • Cardinality constrained portfolio optimisation 

    Fieldsend, Jonathan E.; Matatko, John; Peng, Ming (Springer Berlin Heidelberg, 2004)
    The traditional quadratic programming approach to portfolio optimisation is difficult to implement when there are cardinality constraints. Recent approaches to resolving this have used heuristic algorithms to search for ...
  • Carrier dynamics in semiconductors studied with time-resolved terahertz spectroscopy 

    Ulbricht, Ronald; Hendry, Euan; Shan, Jie; Heinz, Tony F.; Bonn, Mischa (American Physical Society, 2011)
    Time-resolved, pulsed terahertz spectroscopy has developed into a powerful tool to study charge carrier dynamics in semiconductors and semiconductor structures over the past decades. Covering the energy range from a few ...
  • Cascaded Optical Field Enhancement in Composite Plasmonic Nanostructures 

    Kravets, V.G.; Zoriniants, George; Burrows, Christopher P.; Schedin, F.; Casiraghi, C.; Klar, P.; Geim, A.K.; Barnes, William L.; Grigorenko, A.N. (American Physical Society, 2010)
    We present composite plasmonic nanostructures designed to achieve cascaded enhancement of electromagnetic fields at optical frequencies. Our structures were made with the help of electron-beam lithography and comprise a ...
  • A case study integrating remote sensing and distinct element analysis to quarry slope stability assessment in the Monte Altissimo area, Italy 

    Francioni, M; Salvini, R; Stead, D; Litrico, S (Elsevier, 2014-12-09)
    Over last decade geomatic techniques have been increasingly used for the geometrical characterization of rock slopes. Terrestrial laser scanning and digital terrestrial photogrammetry in particular are now frequently used ...
  • A case study of the radiative forcing of persistent contrails evolving into contrail-induced cirrus 

    Haywood, James M.; Allan, Richard P.; Bornemann, Jorge; Forster, Piers M.; Francis, Peter N.; Milton, Sean; Radel, Gaby; Rap, Alexandru; Shine, Keith P.; Thorpe, Robert (American Geophysical Union (AGU), 2009)
    [1] The radiative forcing due to a distinct pattern of persistent contrails that form into contrail-induced cirrus near and over the UK is investigated in detail for a single case study during March 2009. The development ...
  • Casimir effect from macroscopic quantum electrodynamics 

    Philbin, Thomas G. (Institute of Physics, 2011)
    The canonical quantization of macroscopic electromagnetism was recently presented in New J. Phys. 12 (2010) 123008. This theory is here used to derive the Casimir effect, by considering the special case of thermal and ...
  • Casimir stress in an inhomogeneous medium 

    Philbin, Thomas G.; Xiong, C.; Leonhardt, Ulf (Elsevier Masson, 2010)
    The Casimir effect in an inhomogeneous dielectric is investigated using Lifshitz's theory of electromagnetic vacuum energy. A permittivity function that depends continuously on one Cartesian coordinate is chosen, bounded ...
  • The cassiterite-anatase-ilmenite-monazite-sulphide-chlorite assemblage of North Tincroft Lode 

    LeBoutillier, N.G.; Shail, R.K.; Jewson, C. (USSHER SOC, 2000-01)
    North Tincroft Lode (New Cook's Kitchen Mine) forms a segment of an ENE-WSW-striking lode structure that can be traced for similar to2 km along strike and similar to800 m vertically through the Camborne-Redruth mining ...
  • Catalytic graphitization of electrospun cellulose nanofibres using silica nanoparticles 

    Deng, Libo; Lewandowska, Anna E.; Young, Robert J.; Zhang, Guoping; Sun, Rong; Eichhorn, Stephen J. (Elsevier, 2014)
    Abstract Electrospun cellulose nanofibres have been graphitized in the presence of silica (SiO2) nanoparticles. The structure of the resultant SiC/C hybrids was characterised using transmission electron microscopy, X-ray ...
  • Catchment & sewer network simulation model to benchmark control strategies within urban wastewater systems 

    Saagi, Ramesh; Flores-Alsina, Xavier; Fu, Guangtao; Butler, David; Gernaey, Krist V.; Jeppsson, Ulf (Elsevier, 2016-04)
    This paper aims at developing a benchmark simulation model to evaluate control strategies for the urban catchment and sewer network. Various modules describing wastewater generation in the catchment, its subsequent transport ...