Now showing items 1-20 of 22

    • A plasmonic accuracy biosensor using a single laser diode 

      Bañares Palacios, Paula (Universitat Politècnica de Catalunya, 2016-09-07)
      Master thesis
      Open Access
      A theoretical model was implemented to obtain the total specular reflection of a variable external multicavity for out of normal incidence and different polarisations. The model was theoretically and experimentally validated ...
    • Análisis de datos SAR polarimétricos para el estudio y caracterización de zonas agrícolas 

      Montero Muñoz, Ismael (Universitat Politècnica de Catalunya, 2010-12-16)
      Master thesis (pre-Bologna period)
      Open Access
      Castellano: Análisis de datos SAR polarimétricos para el estudio y caracterización de zonas agrícolas en el caso de la misión Sentinel-1 de la Agencia Espacial Europea.
    • Automatic compensation of polarisation drifts in an optical fibre 

      Cichy Cusi, Simon (Universitat Politècnica de Catalunya, 2020-06)
      Bachelor thesis
      Open Access
      In days where Science Fiction uses the word ?Quantum? to justify any weird phenomena, we are actually on the edge of the Second Quantum Revolution. The ability to harness the potential of the quantum state of single particles ...
    • Binary coherent beam combining with semiconductor TA at 705 

      Icaza Astiz, Yannik Alan de (Universitat Politècnica de Catalunya, 2009-09-08)
      Master thesis
      Open Access
      We present a coherent-beam-combining (CBC) experiment using a 795 nm diode laser as a technique to achieve more power by combining two beams. Two Gaussian beams are made to interfere while controlling polarization, ...
    • Characterization of THz radiation by collimated wavefront aperture raster scanning 

      Nuño Gómez, Daniel-Juan; Santos Blanco, M. Concepción; Gomez Diaz, J. Sebastian; Romeu Robert, Jordi; Jofre Roca, Lluís (Universidad de Málaga, 2020)
      Conference report
      Open Access
      We present measurements for characterization of the beam profile and polarization pattern of lens-coupled photoconductive antennas (PCAs) at THz frequencies using a setup with antennas at fixed positions and a movable ...
    • Coherence estimation in synthetic aperture radar data based on speckle noise modeling 

      López Martínez, Carlos; Pottier, Eric (Optical Society of America, 2007-02-28)
      Article
      Open Access
      In the past we proposed a multidimensional speckle noise model to which we now include systematic phase variation effects. This extension makes it possible to define what is believed to be a novel coherence model able to ...
    • Comparison of silver-plated nylon (Ag/PA66) e-textile and Ag/AgCl electrodes for bioelectrical impedance analysis (BIA) 

      Logothetis, Irini; Gil Galí, Ignacio; Wang, Xungai; Razal, Joselito (Institute of Physics (IOP), 2021-05-01)
      Article
      Restricted access - publisher's policy
      Recently, researchers have adapted Bioelectrical Impedance Analysis (BIA) as a new approach to objectively monitor wounds. They have indicated various BIA parameters associated to specific wound types can be linked to wound ...
    • Corrosion rate evaluation by gravimetric and electrochemical techniques applied to the metallic reinforcing structures of a historic building 

      Iribarren Laco, José Ignacio; Liesa Mestres, Francisco; Alemán Llansó, Carlos; Armelín Diggroc, Elaine Aparecida (2017-09-28)
      Article
      Restricted access - publisher's policy
      This work presents the diagnosis procedure followed to determine the degree of damage of a 100-year-oldreinforced concrete building located in Barcelona city, the Sant-Manuel pavilion at Hôpital de la Santa Creui Sant-Pau. ...
    • Design and analysis an array of Patch Antenna at 2.4GHz with circular polarization 

      Domènech Ruiz, Rubén (Universitat Politècnica de Catalunya, 2016-01)
      Bachelor thesis
      Open Access
      Covenantee:   Západočeská univerzita v Plzni
      We are in an industry where everything changes very quickly, and if we focus on the design of antennas we see that increasingly we are looking for smaller dimensions with better features. In this issue we can highlight the ...
    • Effect of flexoelectricity on elasticity characterization by nanoindentation 

      Shaikh, Salik Firdos (Universitat Politècnica de Catalunya, 2017-06-16)
      Master thesis
      Open Access
      Flexoelectricity is a very common phenomenon in dielectrics and is a size-dependent electromechanical mechanism coupling polarization and strain gradient. Flexoelectric effect is significant due to higher strain gradients ...
    • Electrically polarized hydroxyapatite: influence of the polarization process on the microstructure and properties 

      Sans Milà, Jordi; Llorca Piqué, Jordi; Sanz, Vanesa; Puiggalí Bellalta, Jordi; Turón Dols, Pau; Alemán Llansó, Carlos (2019-11-19)
      Article
      Open Access
      Semipermanently polarized hydroxyapatite, named SP/HAp(w), is obtained by applying a constant dc electric field of 1–10 kV/cm at 300–850 °C to the samples previously sintered in water vapor, while permanently polarized ...
    • Flexoelectricity in nanobeams under torsion 

      Moliner Martinez, Jordi (Universitat Politècnica de Catalunya, 2016-06-23)
      Bachelor thesis
      Open Access
      We will study the effect of flexoelectricity in the electromechanical response of nanobeams under torsion.
    • Method to distinguish between space-charge and dipolar relaxation in the TSDC spectra of polyethylene electrical insulation 

      Orrit Prat, Jordi; Cañadas Lorenzo, Juan Carlos; Sellarès González, Jordi; Belana Punseti, Juan (2010)
      Conference lecture
      Open Access
      Medium-voltage cross-linked polyethylene (MV-XLPE) cables have an important role in the electrical power distribution system. For this reason, the study of XLPE insulation may lead to improve cable features and lifetime. ...
    • Molecular dynamics simulations of polarization domains and flexoelectricity in BaTiO3 

      Abarca Morales, Edgar (Universitat Politècnica de Catalunya, 2018-06-27)
      Master thesis
      Open Access
      This thesis is a part of a project started in December 2016 in collaboration with Prof. Jorge Alcalá Cabrelles (UPC, Barcelona) and Dr. Jan Ocenasek (ZCU institute, Czech Republic) aiming to perform piezoelectric and ...
    • Nonlinear duffing oscillator model for third harmonic generation 

      Scalora, Michael; Vincenti, M. A.; Ceglia, Domenico de; Cojocaru, Crina; Grande, Manuel; Haus, J.W. (2015-10-01)
      Article
      Open Access
      We employ a classical, nonlinear Lorentz-Duffing oscillator model to predict third harmonic conversion efficiencies in the ultrafast regime, from a variety of metal nanostructures, including smooth, isolated metal layers, ...
    • On the superconnectivity in graphs with odd girth g and even girth h 

      Balbuena Martínez, Maria Camino Teófila; Montejano, Luis P. (2009-09)
      Article
      Restricted access - publisher's policy
      A maximally connected graph G of minimum degree δ is said to be superconnected (for short super-κ) if all disconnecting sets of cardinality δ are the neighborhood of some vertex of degree δ. Sufficient conditions on the ...
    • Simplistic correlations between molecular electronic properties and inhibition efficiencies: Do they really exist? 

      Kokalj, Anton; Xie, Chenyang; Crespo Artiaga, Daniel; Renner, Frank U.; Mol, A; Milosev, Ingrid (2020-07-23)
      Article
      Restricted access - publisher's policy
      The often used simplistic correlations between molecular electronic parameters and experimentally determined corrosion inhibition efficiencies are critically evaluated for a set of 24 heterocyclic organic compounds, tested ...
    • Soil Moisture estimation using polarimetric SAR 

      Closa Tarres, Marc (Universitat Politècnica de Catalunya, 2019-08)
      Bachelor thesis
      Open Access
      Covenantee:   University of Massachusetts at Amherst
      La humedad del suelo es una variable primaria para comprender el ciclo hidrológico global. En las disciplinas de ciencias de la Tierra y del medio ambiente, la estimación de este parámetro en alta resolución siempre ha ...
    • State of charge dependency of the overvoltage generated in commercial Li-ion cells 

      Ovejas Benedicto, Victòria Júlia; Cuadras Tomàs, Àngel (2019-04-01)
      Article
      Open Access
      The overvoltage that is produced in the cells under operation limits the capacity and power they can deliver. A detailed study about the mechanisms that contribute to that overvoltage—and thus to their lifetime—is required ...
    • Static and dynamic amplitude modulation of light in a twisted nematic liquid crystal display 

      Vilardy Ortiz, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2013)
      Conference lecture
      Restricted access - publisher's policy
      A SLM has been experimentally characterized in terms of amplitude modulation versus the gray level distribution (input signal) electronically addressed to the pixelated display in two conditions: input constant with time, ...