Now showing items 1-20 of 23

  • All-optical manipulation of photonic membranes 

    Kirkpatrick, Blair C.; Ploschner, Martin; Čižmár, Tomas; Di Falco, Andrea (SPIE, 2016-08-28) - Conference item
    Photonic membranes (PMs) are thin, highly-flexible, membranes which can be imbued with specific photonic functionalities when used to play host to plasmonic features.1-3 PMs can then take that photonic functionality and ...
  • An astro-comb calibrated solar telescope to search for the radial velocity signature of Venus 

    Phillips, David F.; Glenday, Alex G.; Dumusque, Xavier; Buchschacher, Nicolas; Cameron, Andrew Collier; Cecconi, Massimo; Charbonneau, David; Cosentino, Rosario; Ghedina, Adriano; Haywood, Raphäelle; Latham, David W.; Li, Chih Hao; Lodi, Marcello; Lovis, Christophe; Molinari, Emilio; Pepe, Francesco; Sasselov, Dimitar; Szentgyorgyi, Andrew; Udry, Stephane; Walsworth, Ronald L. (SPIE, 2016-07-22) - Conference item
    We recently demonstrated sub-m/s sensitivity in measuring the radial velocity (RV) between the Earth and Sun using a simple solar telescope feeding the HARPS-N spectrograph at the Italian National Telescope, which is ...
  • Can topological transitions be exploited to engineer intrinsically quench-resistant wires? 

    Whittlesea, Philip; Quintanilla, Jorge; Annett, James F.; Hillier, Adrian D.; Hooley, Chris (2018-06-01) - Journal article
    In this paper, we investigate whether by synthesizing superconductors that are tuned to a topological, node-reconstruction transition point, we could create superconducting wires that are intrinsically resilient to quenches. ...
  • Control of Q-factor in nanobeam cavities on substrate 

    Panettieri, Danilo; O'Faolain, Liam; Grande, Marco (IEEE, 2016-08-23) - Conference item
    In this paper, we demonstrate how to efficiently control the quality factor of silicon nitride nanobeam cavities, grown on a silica substrate and embedded in an upper cladding, by engineering the nanobeam cross-section and ...
  • Correction : Assessing dimerisation degree and cooperativity in a biomimetic small-molecule model by pulsed EPR 

    Ackermann, K.; Giannoulis, A.; Cordes, D. B.; Slawin, A. M. Z.; Bode, B. E. (2015-10-28) - Journal item
    Correction for ‘Assessing dimerisation degree and cooperativity in a biomimetic small-molecule model by pulsed EPR’ by K. Ackermann et al., Chem. Commun., 2015, 51, 5257–5260.
  • Driven-dissipative spin chain model based on exciton-polariton condensates 

    Sigurdsson, H.; Ramsay, A. J.; Ohadi, H.; Rubo, Y. G.; Liew, T. C.H.; Baumberg, J. J.; Shelykh, I. A. (2017-10-15) - Journal article
    An infinite chain of driven-dissipative condensate spins with uniform nearest-neighbor coherent coupling is solved analytically and investigated numerically. Above a critical occupation threshold the condensates undergo ...
  • Electro-optic modulation in bulk silicon using surface plasmon resonance 

    Debnath, Kapil; Damas, Pedro; O'Faolain, Liam (2016-01-01) - Journal article
    We propose and present simulated results for a new design of an optical modulator based on Surface Plasmon Polariton (SPP) resonance. The modulator is realized on a bulk silicon substrate, thus offering an opportunity for ...
  • Fast dynamic color switching in temperature-responsive plasmonic films 

    Ding, Tao; Rüttiger, Christian; Zheng, Xuezhi; Benz, Felix; Ohadi, Hamid; Vandenbosch, Guy A.E.; Moshchalkov, Victor V.; Gallei, Markus; Baumberg, Jeremy J. (2016-06) - Journal article
  • Finding and proving the exact ground state of a generalized Ising model by convex optimization and MAX-SAT 

    Huang, Wenxuan; Kitchaev, Daniil A.; Dacek, Stephen T.; Rong, Ziqin; Urban, Alexander; Cao, Shan; Luo, Chuan; Ceder, Gerbrand (2016-10-21) - Journal article
    Lattice models, also known as generalized Ising models or cluster expansions, are widely used in many areas of science and are routinely applied to the study of alloy thermodynamics, solid-solid phase transitions, magnetic ...
  • GravityCam : wide-field, high-resolution imaging and high-speed photometry instrument 

    Mackay, Craig; Dominik, Martin; Steele, Iain (SPIE, 2016-08-19) - Conference item
    The limits to the angular resolution achievable with conventional ground-based telescopes are unchanged over 70 years. Atmospheric turbulence limits image quality to typically ∼1 arcsec in practice. We have developed a new ...
  • Hybrid photonic crystal lasers 

    Liles, Alexandros A.; Bakoz, Andrei P.; Gonzalez-Fernandez, Alfredo; Habruseva, Tatiana; Persheyev, Saydulla; Huyet, Guillaume; Hegarty, Stephen P.; O'Faolain, Liam (IEEE, 2016-08-23) - Conference item
    Energy efficient Wavelength Division Multiplexing (WDM) is the key to satisfying the future bandwidth requirements of datacentres. As the silicon photonics platform is regarded the only technology able to meet the required ...
  • Increasing the Brønsted acidity of Ph2PO2H by the Lewis acid B(C6F5)3. Formation of an eight-membered boraphosphinate ring [Ph2POB(C6F5)2O]2 

    Kather, Ralf; Rychagova, Elena; Camacho, Paula Sanz; Ashbrook, Sharon E.; Woollins, J. Derek; Robben, Lars; Lork, Enno; Ketkov, Sergey; Beckmann, Jens (2016-09-21) - Journal article
    Autoprotolysis of the metastable acid (C6F5)3BOPPh2OH, prepared in situ by the reaction of the rather weak Brønsted acid Ph2PO2H with the strong Lewis acid B(C6F5)3, gave rise to the formation of the eight-membered ring ...
  • Innovative mid-infrared detector concepts 

    Höfling, Sven; Pfenning, Andreas; Weih, Robert; Ratajczak, Albert; Hartmann, Fabian; Knebl, Georg; Kamp, Martin; Worschech, Lukas (SPIE, 2016-09-14) - Conference item
    Gas sensing is a key technology with applications in various industrial, medical and environmental areas. Optical detection mechanisms allow for a highly selective, contactless and fast detection. For this purpose, ...
  • Magnetic proximity-enhanced Curie temperature of Cr-doped Bi2Se3 thin films 

    Baker, A. A.; Figueroa, A. I.; Kummer, K.; Collins-McIntyre, Liam James; Hesjedal, T.; van der Laan, G. (2015-09-11) - Journal article
    We report a study on the transition temperature TC of Cr-doped topological insulator thin films, where an increase in the ferromagnetic onset can provide a pathway towards low-power spintronics in the future. Arrott plots, ...
  • Millimeter wave imaging : a historical review 

    Appleby, Roger; Robertson, Duncan A.; Wikner, David (SPIE, 2017-05-11) - Conference item
    The SPIE Passive and Active Millimeter Wave Imaging conference has provided an annual focus and forum for practitioners in the field of millimeter wave imaging for the past two decades. To celebrate the conference's twentieth ...
  • Millimeter-wave micro-Doppler measurements of small UAVs 

    Rahman, Samiur; Robertson, Duncan A. (SPIE, 2017-05-01) - Conference item
    This paper discusses the micro-Doppler signatures of small UAVs obtained from a millimeter-wave radar system. At first, simulation results are shown to demonstrate the theoretical concept. It is illustrated that whilst the ...
  • MIMO visible light communications using a wide field-of-view fluorescent concentrator 

    Mulyawan, Rahmat; Chun, Hyunchae; Gomez, Ariel; Rajbhandari, Sujan; Faulkner, Grahame; Manousiadis, Pavlos P.; Vithanage, Dimali A.; Turnbull, Graham A.; Samuel, Ifor D W; Collins, Stephen; O'Brien, Dominic (2017-02-01) - Journal article
    This letter reports a demonstration of a 2 x 2 multiple-input multiple-output (MIMO) indoor visible-light communication (VLC) system using a novel fluorescent optical concentrator-based receiver. This potentially allows a ...
  • New insights into photodynamic therapy treatment through the use of 3D Monte Carlo radiation transfer modelling 

    Campbell, C. Louise; Wood, Kenneth; Brown, C. Tom A; Moseley, Harry (SPIE, 2016-02-29) - Conference item
    Photodynamic therapy (PDT) has been theoretically investigated using a Monte Carlo radiation transfer (MCRT) model. By including complex three dimensional (3D) tumour models a more appropriate representation of the treatment ...
  • Photoluminescence quenching mechanisms in type II InAs/GaInSb QWs on InAs substrates 

    Dyksik, M.; Motyka, M.; Kurka, M.; Ryczko, K.; Dallner, M.; Höfling, S.; Kamp, M.; Sęk, G.; Misiewicz, J. (2016-08) - Journal article
    Optical properties of AlSb/InAs/GaInSb/InAs/AlSb quantum wells (QWs) grown on an InAs substrate were investigated from the point of view of room temperature emission in the mid- and long-wavelength infrared ranges. By means ...
  • A solid state 94 GHz FMCW Doppler radar demonstrator for cloud profiling 

    Robertson, Duncan A.; Hunter, Robert I. (SPIE, 2017-05-01) - Conference item
    We present the design and characterization of a ground-based, zenith-pointing, 94 GHz FMCW Doppler radar demonstrator for cloud profiling. The radar uses an all solid-state and relatively simple homodyne architecture and ...