Now showing items 21-31 of 31

    • Nuevas evidencias de la anisotropía del espacio visual en el juicio de distancias en profundidad 

      Lupón Bas, Núria; Torrents Gómez, Aurora; Aznar Casanova, José Antonio (2013-03-05)
      Article
      Open Access
    • Plastic deformation induced anisotropy in metallic glasses: A molecular dynamics study 

      Velasco Cruz, Jorge Enrique; Concustell, Amadeu; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2017-06-15)
      Article
      Open Access
      The atomic structure of a Cu13Ni34Pd53 metallic glass was studied by molecular dynamics simulation at different temperatures along a shear deformation cycle. A simulation box of 1 million atoms was deformed in the x axis ...
    • Scaling of a slope: the erosion of tilted landscapes 

      Pastor Satorras, Romualdo; Rothman, Daniel H. (1998-11)
      Article
      Open Access
      We formulate a stochastic equation to model the erosion of a surface with fixed inclination. Because the inclination imposes a preferred direction for material transport, the problem is intrinsically anisotropic. At zeroth ...
    • Simulations and analysis of beam quality improvement in spatially modulated broad area edge-emitting devices 

      Radziunas, Mindaugas; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2014)
      Conference report
      Restricted access - publisher's policy
      We simulate and analyze how beam quality improves while being amplified in edge emitting broad area semiconductor amplifiers with a periodic structuring of the electrical contacts, in both longitudinal and lateral directions. ...
    • Spherocylindrical microplane constitutive model for shale and other anisotropic rocks 

      Cunbao, Li; Caner, Ferhun Cem; T. Chau, Viet; P. Bažant, Zdenek (2017-06-01)
      Article
      Open Access
      Constitutive equations for inelastic behavior of anisotropic materials have been a challenge for decades. Presented is a new spherocylindrical microplane constitutive model that meets this challenge for the inelastic ...
    • Stochastic equation for the erosion of inclined topography 

      Pastor Satorras, Romualdo; Rothman, Daniel H. (American Institute of Physics (AIP), 1998-05-11)
      Article
      Open Access
      We present a stochastic equation to model the erosion of topography with fixed inclination. The inclination causes the erosion to be anisotropic. A zero-order consequence of the anisotropy is the dependence of the prefactor ...
    • Study of medium range reordering by plastic deformation in Cu46Zr46Al8 

      Velasco Cruz, Jorge Enrique; Concustell, Amadeu; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2018-05-05)
      Article
      Open Access
      The influence of shear in the atomic structure of ternary Cu46Zr46Al8 metallic glass was studied at different temperatures by molecular dynamics (MD) simulation. At temperatures above and below the glass transition temperature ...
    • Temperature Imaging around Plasmonic Structures 

      Donner, Jon Sean (Universitat Politècnica de Catalunya, 2010-06-03)
      Master thesis
      Open Access
      In the course of this work a novel microscope was constructed that is able to obtain a temperature map on the micro and nanoscale. The principle is demonstrated by presenting thermal maps of heated gold micro and nano ...
    • Topological properties of bound states in the continuum in geometries with broken anisotropy symmetry 

      Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (2018-12-18)
      Article
      Open Access
      Waveguiding structures made of anisotropic media support bound states in the continuum (BICs) that arise when the radiation channel of otherwise semileaky modes is suppressed. Hitherto, only structures with optical axes ...
    • Topology Transitions of Anisotropy Induced Bound States in the Continuum 

      Mukherjee, Samyobrata; Gomis Bresco, Jordi; Pujol Closa, Maria del Pilar; Artigas García, David; Torner Sabata, Lluís (2018)
      Conference report
      Open Access
      We demonstrate that Bound states In the Continuum (BICs) are supported in planar anisotropic structures where the optic axes are arbitrarily oriented. Moreover, we reveal fundamental new topological properties of these ...
    • Transition from Dirac points to exceptional points in anisotropic waveguides 

      Gomis Bresco, Jordi; Artigas García, David; Torner Sabata, Lluís (American Physical Society, 2019-10-04)
      Article
      Open Access
      We uncover the existence of Dirac and exceptional points in waveguides made of anisotropic materials, and study the transition between them. Dirac points in the dispersion diagram appear at propagation directions where the ...