Now showing items 194-206 of 206

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      Thermochemical energy storage of concentrated solar power by Integration of the calcium looping process and a CO2 power cycle  [Article]

      Chacartegui, Ricardo; Alovisio, A.; Ortiz Domínguez, Carlos; Valverde Millán, José Manuel; Verda, V.; Becerra Villanueva, José Antonio (Elsevier, 2016)
      Energy storage is the main challenge for a deep penetration of renewable energies into the grid to overcome their intrinsic variability. Thus, the commercial expansion of renewable energy, particularly wind and solar, ...
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      Three-dimensional superresolution in metamaterial slab lenses: Experiment and theory  [Article]

      Mesa Ledesma, Francisco Luis; Freire Rosales, Manuel José; Marqués Sillero, Ricardo; Baena, J.D. (American Physical Society, 2005)
      This paper presents a theoretical and experimental study on the viability of obtaining two- and three-dimensional superresolution (i.e., resolution overcoming the diffraction limit for all directions in space) by means of ...
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      Tilted response of fishnet metamaterials at near-infrared optical wavelengths  [Article]

      Minovich, Alexander; Neshev, Dragomir N.; Powell, David A.; Shadrivov, Ilya V.; Lapine, Mikhail; McKerracher, Ian; Hattori, Haroldo T.; Tan, Hark Hoe; Jagadish, Chennupati; Kivshar, Yuri S. (American Physical Society, 2010)
      We study experimentally the transmission properties of Au-TiO2 -Au fishnet metamaterials in the near-infrared spectral range and analyze the change in the transmission resonances at varying angles of incidence and different ...
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      Towards a systematic design of isotropic bulk magnetic metamaterials using the cubic point groups of symmetry  [Article]

      Baena, J.D.; Jelinek, L.; Marqués Sillero, Ricardo (American Physical Society, 2007)
      In this paper, a systematic approach to the design of bulk isotropic magnetic metamaterials is presented. The roles of the symmetries of both the constitutive element and the lattice are analyzed. For this purpose, it is ...
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      Towards the IC implementation of adaptive fuzzy systems  [Article]

      Baturone Castillo, María Iluminada; Sánchez Solano, Santiago; Huertas Díaz, José Luis (Institute of Electronics, Information and Communication Engineers, 1998)
      The required building blocks of CMOS fuzzy chips capable of performing as adaptive fuzzy systems are described in this paper. The building blocks are designed with mixed-signal current-mode cells that contain low-resolution ...
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      Transmission through stacked 2D periodic distributions of square conducting patches  [Article]

      Kaipa, Chandra S. R.; Yakovlev, Alexander B.; Medina Mena, Francisco; Mesa Ledesma, Francisco Luis (American Institute of Physics, 2012)
      In this paper, we study the transmissivity of electromagnetic waves through stacked two-dimensional printed periodic arrays of square conducting patches. An analytical circuit-like model is used for the analysis. The model ...
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      Two-dimensional numerical analysis of electroconvection in a dielectric liquid subjected to strong unipolar injection  [Article]

      Traoré, P.; Pérez Izquierdo, Alberto Tomás (American Institute of Physics, 2012)
      Two-dimensional numerical simulations are carried out to examine the problem of transient electroconvection stability of dielectric liquids subjected to unipolar injection. The entire set of electrohydrodynamics equations ...
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      Two-dimensional study of leaky modes in microstrip line with a semi-infinite cover layer  [Article]

      Rodríguez Berral, Raúl; Mesa Ledesma, Francisco Luis; Medina Mena, Francisco (Wiley-Blackwell, 2004)
      This work presents a two-dimensional (2-D) study of the modal spectrum of a single microstrip and a pair of coupled microstrip lines with an upper dielectric half-space. This 2-D study is postulated as the necessary step ...
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      Types of gas fluidization of cohesive granular materials  [Article]

      Valverde Millán, José Manuel; Castellanos Mata, Antonio (American Physical Society, 2007)
      Some years ago it was shown that gas-fluidized powders may transit from solidlike to fluidlike fluidization prior to bubbling, shedding light on a long-standing controversy on the nature of “homogeneous” fluidization. In ...
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      Typical and rare fluctuations in nonlinear driven diffusive systems with dissipation  [Article]

      Hurtado Fernández, Pablo Ignacio; Lasanta Becerra, Antonio; Prados Montaño, Antonio (American Physical Society, 2013-08-08)
      We consider fluctuations of the dissipated energy in nonlinear driven diffusive systems subject to bulk dissipation and boundary driving. With this aim, we extend the recently introduced macroscopic fluctuation theory to ...
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      Vibration-induced dynamical weakening of pyroclastic flows: Insights from rotating drum experiments  [Article]

      Valverde Millán, José Manuel; Soria del Hoyo, Carlos (Wiley-Blackwell, 2015)
      Pyroclastic flows are characterized by their high mobility, which is often attributed to gas fluidization of the usually fine and/or low-density particles. However, the physical mechanism that might drive sustained ...
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      Wideband analytical equivalent circuit for coupled asymmetrical nonaligned slit arrays  [Article]

      Molero Jiménez, Carlos; Rodríguez Berral, Raúl; Mesa Ledesma, Francisco Luis; Medina Mena, Francisco (American Physical Society, 2017)
      Microstructured metallic devices have been extensively studied because of their interesting properties for controlling the transmission, reflection, and absorption of electromagnetic waves. A very simple implementation is ...
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      Wideband analytical equivalent circuit for one-dimensional periodic stacked arrays  [Article]

      Molero Jiménez, Carlos; Rodríguez Berral, Raúl; Mesa Ledesma, Francisco Luis; Medina Mena, Francisco; Yakovlev, Alexander B. (American Physical Society, 2016)
      A wideband equivalent circuit is proposed for the accurate analysis of scattering from a set of stacked slit gratings illuminated by a plane wave with transverse magnetic or electric polarization that impinges normally or ...