Now showing items 313-332 of 580

  • 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 ...
  • 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 ...
  • 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 imaging: Peeking through the curtain 

    Bertolotti, Jacopo (Nature Publishing Group, 2014)
  • 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 ...
  • 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 ...
  • Observation of negative-frequency waves in a water tank: A classical analogue to the Hawking effect? 

    Rousseaux, Germain; Mathis, Christian; Maissa, Philippe; Philbin, Thomas G.; Leonhardt, Ulf (Institute of Physics, 2008)
    The conversion of positive-frequency waves into negative-frequency waves at the event horizon is the mechanism at the heart of the Hawking radiation of black holes. In black-hole analogues, horizons are formed for waves ...
  • Observation of T2-like coherent optical phonons in epitaxial Ge2Sb2Te5/GaSb(001) films 

    Shalini, Ashawaraya; Liu, Y.; Al-Jarah, Uday Ali Sabeeh; Srivastava, G.P.; Wright, C. David; Katmis, F.; Braun, W.; Hicken, R.J. (Nature Publishing Group, 2013)
    The phonon spectrum of Ge2Sb2Te5 is a signature of its crystallographic structure and underlies the phase transition process used in memory applications. Epitaxial materials allow coherent optical phonons to be studied in ...
  • Observation of the full 12-hour-long transit of the exoplanet HD80606b: Warm-Spitzer photometry and SOPHIE spectroscopy 

    Hebrard, G.; Desert, J.-M.; Diaz, R.F.; Boisse, I.; Bouchy, F.; Lecavelier des Etangs, A.; Moutou, C.; Ehrenreich, D.; Arnold, L.; Bonfils, X.; Delfosse, X.; Desort, M.; Eggenberger, A.; Forveille, T.; Gregorio, J.; Lagrange, A.-M.; Lovis, C.; Pepe, F.; Perrier, C.; Pont, F.; Queloz, D.; Santerne, A.; Santos, N.C.; Segransan, D.; Sing, David K.; Udry, S.; Vidal-Madjar, A. (EDP Sciences for European Southern Observatory (ESO), 2010)
    We present new observations of a transit of the 111.4-day-period exoplanet HD 80606b. Due to this long orbital period and to the orientation of the eccentric orbit (e = 0.9), HD 80606b's transits last for about 12 hours. ...
  • Observation of thickness dependence of magnetic surface anisotropy in ultrathin amorphous films. 

    Hicken, R.J.; Rado, G.T.; Xiao, G.; Chien, C.L. (American Physical Society, 1990)
    Ferromagnetic resonance (FMR) and SQUID magnetometry measurements have been made on multilayers of amorphous Fe70B30/Ag. The dependence of the magnetic surface anisotropy constant Ks on the magnetic layer thickness 2L has ...
  • An Observational Perspective of Transitional Disks 

    Espaillat, C; Muzerolle, J; Najita, J; Andrews, S; Zhu, Z; Calvet, Nuria; Kraus, Stefan; Hashimoto, J; Kraus, Adam; D Alessio, P (arXiv.org, 2014-02-27)
    Transitional disks are objects whose inner disk regions have undergone substantial clearing. The Spitzer Space Telescope produced detailed spectral energy distributions (SEDs) of transitional disks that allowed us to infer ...
  • Observed luminosity spread in young clusters and Fu Ori stars: a unified picture 

    Baraffe, I.; Vorobyov, Eduard I.; Chabrier, G. (American Astronomical Society, 2012)
    The idea that non-steady accretion during the embedded phase of protostar evolution can produce the observed luminosity spread in the Herzsprung–Russell diagram (HRD) of young clusters has recently been called into question. ...
  • On close-in magnetized star-planet interactions 

    Strugarek, Antoine; Brun, Allan Sacha; Matt, Sean P. (French Society of Astronomy and Astrophysics, 2012)
    We present 2D magnetohydrodynamic simulations performed with the PLUTO code to model magnetized star-planet interactions. We study two simple scenarios of magnetized star-planet interactions: the unipolar and dipolar ...