Now showing items 405-424 of 729

  • Nanoscale Electromagnetic Compatibility: Quantum Coupling and Matching in Nanocircuits 

    Slepyan, GY; Boag, A; Mordachev, V; Sinkevich, E; Maksimenko, S; Kuzhir, P; Miano, G; Portnoi, M.E.; Maffucci, A (Institute of Electrical and Electronics Engineers Inc., 2015-08-11)
    The paper investigates two typical electromagnetic compatibility (EMC) problems, namely, coupling and matching in nanoscale circuits composed of nano-interconnects and quantum devices in entangled state. Nano-interconnects ...
  • Nanoscale spin wave valve and phase shifter 

    Au, Y.; Dvornik, Mykola; Dmytriiev, O.; Kruglyak, V.V. (American Institute of Physics, 2012)
    We have used micromagnetic simulations to demonstrate a method for controlling the amplitude and phase of spin waves propagating inside a magnonic waveguide. The method employs a nanomagnet formed on top of a magnonic ...
  • Nanoscale switch for vortex polarization mediated by Bloch core formation in magnetic hybrid systems. 

    Wohlhüter, P; Bryan, MT; Warnicke, P; Gliga, S; Stevenson, SE; Heldt, G; Saharan, L; Suszka, AK; Moutafis, C; Chopdekar, RV; Raabe, J; Thomson, T; Hrkac, Gino; Heyderman, LJ (Nature Publishing Group: Nature Communications, 2015-08-04)
    Vortices are fundamental magnetic topological structures characterized by a curling magnetization around a highly stable nanometric core. The control of the polarization of this core and its gyration is key to the utilization ...
  • Nanoscale temperature measurements using non-equilibrium Brownian dynamics of a levitated nanosphere 

    Millen, J; Deesuwan, T; Barker, P; Anders, Janet (Nature Publishing Group, 2014-05-04)
    Einstein realized that the fluctuations of a Brownian particle can be used to ascertain the properties of its environment. A large number of experiments have since exploited the Brownian motion of colloidal particles for ...
  • Near-infrared interferometric observation of the Herbig Ae star HD 144432 with VLTI/AMBER 

    Chen, L.; Kreplin, Alexander; Wang, Y.; Weigelt, Gerd; Hofmann, Karl-Heinz; Kraus, Stefan; Schertl, D.; Lagarde, S.; Natta, A.; Petrov, R.; Robbe-Dubois, S.; Tatulli, E. (EDP Sciences for European Southern Observatory (ESO), 2012)
    Aims. We study the sub-AU-scale circumstellar environment of the Herbig Ae star HD 144432 with near-infrared VLTI/AMBER observations to investigate the structure of its inner dust disk. Methods. The interferometric ...
  • Negative permeability due to exchange spin-wave resonances in thin magnetic films with surface pinning 

    Mikhaylovskiy, Rostislav; Hendry, Euan; Kruglyak, V.V. (American Physical Society, 2010)
    We report a theory of the effective permeability of multilayered metamaterials containing thin ferromagnetic layers with magnetization pinned on either one or both surfaces. Because of the pinning and small film thickness, ...
  • New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit 

    Baraffe, I.; Homeier, D.; Allard, F.; Chabrier, G. (EDP Sciences, 2015-03-13)
    We present new models for low-mass stars down to the hydrogen-burning limit that consistently couple atmosphere and interior structures, thereby superseding the widely used BCAH98 models. The new models include updated ...
  • A new way of thinking about environmental building standards: Developing and demonstrating a client-led zero-energy standard 

    Parkin, A; Mitchell, A; Coley, D (SAGE Publications, 2015-11-14)
    There are over 70 low energy and carbon standards in use around the world. None of these standards have been designed by the clients who pay for and occupy the buildings in question. In this work, the client was asked to ...
  • No quantum friction between uniformly moving plates 

    Philbin, Thomas G.; Leonhardt, Ulf (Institute of Physics, 2009)
    The Casimir forces between two plates moving parallel to each other are found by calculating the vacuum electromagnetic stress tensor. The perpendicular force between the plates is modified by the motion but there is no ...
  • No Sun-like dynamo on the active star ζ Andromedae from starspot asymmetry 

    Roettenbacher, R. M.; Monnier, J. D.; Korhonen, H.; Aarnio, A. N.; Baron, F.; Che, X.; Harmon, R. O.; Kővári, Zs.; Kraus, Stefan; Schaefer, G. H.; Torres, G.; Zhao, M.; ten Brummelaar, T. A.; Sturmann, J.; Sturmann, L. (Nature Publishing Group, 2016-05-04)
    Sunspots are cool areas caused by strong surface magnetic fields inhibiting convection. Moreover, strong magnetic fields can alter the average atmospheric structure , degrading our ability to measure stellar masses and ...
  • Noise properties of the CoRoT data. A planet-finding perspective 

    Aigrain, Suzanne; Pont, F.; Fressin, F.; Alapini, Aude; Alonso, R.; Auvergne, M.; Barbieri, M.; Barge, P.; Bordé, P.; Bouchy, F.; Deeg, H. J.; De la Reza, R.; Deleuil, M.; Dvorak, R.; Erikson, A.; Fridlund, M.; Gondoin, P.; Guterman, P.; Jorda, L.; Lammer, H.; Léger, A.; Llebaria, A.; Magain, P.; Mazeh, T.; Moutou, C.; Ollivier, M.; Pätzold, M.; Queloz, D.; Rauer, H.; Rouan, D.; Schneider, J.; Wuchterl, G.; Zucker, S. (EDP Sciences, 2009)
    In this short paper, we study the photometric precision of stellar light curves obtained by the CoRoT satellite in its planet-finding channel, with a particular emphasis on the time scales characteristic of planetary ...
  • Non-invasive biomechanical characterization of intervertebral discs by shear wave ultrasound elastography: a feasibility study. 

    Vergari, C; Rouch, P; Dubois, G; Bonneau, D; Dubousset, J; Tanter, M; Gennisson, JL; Skalli, W (Springer Verlag, 2014-12)
    OBJECTIVES: Although magnetic resonance is widely spread to assess qualitatively disc morphology, a simple method to determine reliably intervertebral disc status is still lacking. Shear wave elastography is a novel technique ...
  • Non-invasive chemically specific measurement of subsurface temperature in biological tissues using surface-enhanced spatially offset Raman spectroscopy. 

    Gardner, B; Stone, N; Matousek, P (Royal Society of Chemistry, 2016-01-13)
    Here we demonstrate for the first time the viability of characterising non-invasively the subsurface temperature of SERS nanoparticles embedded within biological tissues using spatially offset Raman spectroscopy (SORS). ...
  • Non-invasive imaging: Peeking through the curtain 

    Bertolotti, Jacopo (Nature Publishing Group, 2014)
  • Non-invasive, near-field terahertz imaging of hidden objects using a single pixel detector 

    Stantchev, RI; Sun, B; Hornett, SM; Hobson, PA; Gibson, GM; Padgett, MJ; Hendry, E (Cornell University, 2016-02-18)
    Terahertz (THz) imaging has the ability to see through otherwise opaque materials. However, due to the long wavelengths of THz radiation ({\lambda}=300{\mu}m at 1THz), far-field THz imaging techniques are heavily outperformed ...
  • A non-isothermal theory for interpreting sodium lines in transmission spectra of exoplanets 

    Heng, Kevin; Wyttenbach, Aurélien; Lavie, Baptiste; Sing, David K.; Ehrenreich, D.; Lovis, C. (American Astronomical Society, 2015)
    We present a theory for interpreting the sodium lines detected in transmission spectra of exoplanetary atmospheres. Previous analyses employed the isothermal approximation and dealt only with the transit radius. By recognizing ...
  • Nonlinear resistivity and heat dissipation in monolayer graphene 

    Price, A.S.; Hornett, Samuel M.; Shytov, A.V.; Hendry, Euan; Horsell, D.W. (American Physical Society, 2012)
    We have experimentally studied the nonlinear nature of electrical conduction in monolayer graphene devices on silica substrates. This nonlinearity manifests itself as a nonmonotonic dependence of the differential resistance ...
  • Novel highly conductive and transparent graphene-based conductors 

    Khrapach, Ivan; Withers, Freddie; Bointon, Thomas H.; Polyushkin, Dmitry K.; Barnes, William L.; Russo, Saverio; Craciun, Monica F. (Wiley-VCH Verlag, 2012-04-25)
    Transparent conductors based on few-layer graphene (FLG) intercalated with ferric chloride (FeCl(3)) have an outstandingly low sheet resistance and high optical transparency. FeCl(3)-FLGs outperform the current limit of ...
  • Observation of backflow in the switch-on dynamics of a hybrid aligned nematic 

    Jewell, Sharon A.; Sambles, J. Roy (American Institute of Physics, 2004)
    The optical convergent-beam technique is used to measure, in 0.3 ms steps, the response of the director in a 4.6-µm-thick ZLI-2293 filled hybrid aligned nematic cell when a 10 kHz, 7 Vrms ac voltage is applied to the cell. ...
  • Observation of ferromagnetic resonance in the time domain 

    Hicken, R.J.; Wu, J. (American Institute of Physics, 1999)
    Optical pump–probe spectroscopy has been used to observe damped ferromagnetic resonance (FMR) oscillations in thin film Fe samples. The FMR was pumped by magnetic field pulses generated by an optically triggered photoconductive ...