Now showing items 777-796 of 1358

  • Nanohelices as superlattices: Bloch oscillations and electric dipole transitions 

    Downing, CA; Robinson, MG; Portnoi, ME (American Physical Society, 2016-10-13)
    Subjecting a nanohelix to a transverse electric field gives rise to superlattice behavior with tunable electronic properties. We theoretically investigate such a system and find Bloch oscillations and negative differential ...
  • 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 Properties of Human Telomeres Measured with a Dual Purpose X-ray Fluorescence and Super Resolution Microscopy Gold Nanoparticle Probe 

    Jeynes, JCG; Geraki, K; Jeynes, C; Zhaohong, M; Bettiol, AA; Latorre, E; Harries, LW; Soeller, C (American Chemical Society, 2017-11-01)
    Techniques to analyze human telomeres are imperative in studying the molecular mechanism of aging and related diseases. Two important aspects of telomeres are their length in DNA base pairs (bps) and their biophysical ...
  • 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 ...
  • The nature and structure of the white-reflecting underside ‘scales’ on the hind wing of Pseudolestes mirabilis (Odonata: Pseudolestidae) 

    Orr, Albert G.; Nixon, Matthew R.; Vukusic, Peter (Osmylus Scientific Publishers, 2017-06-01)
    The Hainanese endemic damselfly, Pseudolestes mirabilis, is unique among the Odonata in having brilliant silvery-white reflective areas on the underside of the hind wings in mature males. The light reflected is easily ...
  • 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 ...
  • Near-Infrared interferometry of η Carinae with high spatial and spectral resolution using the VLTI and the AMBER instrument 

    Weigelt, G; Kraus, S; Driebe, T; Petrov, RG; Hofmann, K-H; Millour, F; Chesneau, O; Schertl, D; Malbet, F; Hillier, JD; Gull, T; Davidson, K; Domiciano de Souza, A; Antonelli, P; Beckmann, U; Bresson, Y; Chelli, A; Dugué, M; Duvert, G; Gennari, S; Glück, L; Kern, P; Lagarde, S; Le Coarer, E; Lisi, F; Perraut, K; Puget, P; Rantakyrö, F; Robbe-Dubois, S; Roussel, A; Tatulli, E; Zins, G; Accardo, M; Acke, B; Agabi, K; Altariba, E; Arezki, B; Aristidi, E; Baffa, C; Behrend, J; Blöcker, T; Bonhomme, S; Busoni, S; Cassaing, F; Clausse, J-M; Colin, J; Connot, C; Delboulbé, A; Feautrier, P; Ferruzzi, D; Forveille, T; Fossat, E; Foy, R; Fraix-Burnet, D; Gallardo, A; Giani, E; Gil, C; Glentzlin, A; Heiden, M; Heininger, M; Hernandez Utrera, O; Kamm, D; Kiekebusch, M; Le Contel, D; Le Contel, J-M; Lesourd, T; Lopez, B; Lopez, M; Magnard, Y; Marconi, A; Mars, G; Martinot-Lagarde, G; Mathias, P; Mège, P; Monin, J-L; Mouillet, D; Mourard, D; Nussbaum, E; Ohnaka, K; Pacheco, J; Perrier, C; Rabbia, Y; Rebattu, S; Reynaud, F; Richichi, A; Robini, A; Sacchettini, M; Schöller, M; Solscheid, W; Spang, A; Stee, P; Stefanini, P; Tallon, M; Tallon-Bosc, I; Tasso, D; Testi, L; Vakili, F; von der Lühe, O; Valtier, J-C; Vannier, M; Ventura, N; Weis, K; Wittkowski, M (EDP Sciences, 2006-09-12)
    Aims. We present the first NIR spectro-interferometry of the LBV η Carinae. The observations were performed with the AMBER instrument of the ESO Very Large Telescope Interferometer (VLTI) using baselines from 42 to 89 m. ...
  • Near-Infrared Spectroscopy of the Y0 WISEP J173835.52+273258.9 and the Y1 WISE J035000.32-565830.2: the Importance of Non-Equilibrium Chemistry 

    Leggett, SK; Tremblin, P; Saumon, D; Marley, MS; Morley, CV; Amundsen, DS; Baraffe, I; Chabrier, G (American Astronomical Society, 2016-06-03)
    We present new near-infrared spectra, obtained at Gemini Observatory, for two Y dwarfs: WISE J035000.32-565830.2 (W0350) and WISEP J173835.52+273258.9 (W1738). A FLAMINGOS-2 R=540 spectrum was obtained for W0350, covering ...
  • Negative frequencies in wave propagation: A microscopic model 

    Horsley, SAR; Bugler-Lamb, S (American Physical Society, 2016-06-14)
    A change in the sign of the frequency of a wave between two inertial reference frames corresponds to a reversal of the phase velocity. Yet from the point of view of the relation E=ω, a positive quantum of energy apparently ...
  • 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 chemical scheme for studying carbon-rich exoplanet atmospheres 

    Venot, O; Hébrard, E; Agúndez, M; Decin, L; Bounaceur, R (EDP Sciences for European Southern Observatory (ESO), 2015-04-27)
    Atmospheres with a high C/O ratio are expected to contain an important quantity of hydrocarbons, including heavy molecules (with more than 2 carbon atoms). To study correctly these C-rich atmospheres, a chemical scheme ...
  • A new class of magnetically actuated pumps and valves for microfluidic applications 

    Hamilton, J; Bryan, MT; Gilbert, AD; Ogrin, FY; Myers, TO (Springer Nature, 2018-01-17)
    We propose a new class of magnetically actuated pumps and valves that could be incorporated into microfluidic chips with no further external connections. The idea is to repurpose ferromagnetic low Reynolds number swimmers ...
  • A new classification system for degenerative spondylolisthesis of the lumbar spine 

    Gille, O; Bouloussa, H; Mazas, S; Vergari, C; Challier, V; Vital, J-M; Coudert, P; Ghailane, S (Springer Verlag for EuroSpine, 2017-08-23)
    PURPOSE: There is no consensus for a comprehensive analysis of degenerative spondylolisthesis of the lumbar spine (DSLS). A new classification system for DSLS based on sagittal alignment was proposed. Its clinical relevance ...
  • 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 Method for Characterizing Very-Low-Mass Companions with Low Resolution Near-Infrared Spectroscopy 

    Rice, EL; Oppenheimer, R; Zimmerman, N; Roberts, LC; Hinkley, S (IOP Publishing, 2015-05)
    We present a new and computationally efficient method for characterizing very low-mass companions using low-resolution (R ~ 30), near-infrared (YJH) spectra from high-contrast imaging campaigns with integral field spectrograph ...
  • New methods for determining the ages of PMS stars 

    Naylor, T; Mayne, NJ; Jeffries, RD; Littlefair, SP; Saunders, ES (Cambridge University Press (CUP) for International Astronomical Union (IAU), 2008-10)
    We present three new methods for determining the age of groups of pre-main-sequence stars. The first, creating empirical isochrones allows us to create a robust age ordering, but not to derive actual ages. The second, using ...
  • New opportunities with spectro-interferometry and spectro-astrometry 

    Kraus, S (Society of Photo-optical Instrumentation Engineers (SPIE), 2012-09-12)
    Latest-generation spectro-interferometric instruments combine a milliarcsecond angular resolution with spectral capabilities, resulting in an immensely increased information content. Here, I present methodological work and ...
  • New relationships between breast microcalcifications and cancer. 

    Baker, R; Rogers, KD; Shepherd, N; Stone, N (Cancer Research UK, 2010-09-14)
    BACKGROUND: Breast microcalcifications are key diagnostically significant radiological features for localisation of malignancy. This study explores the hypothesis that breast calcification composition is directly related ...