Enviaments recents

  • A Monte Carlo approach to statics and dynamics of quantum fluids 

    Ferré Porta, Guillem (Universitat Politècnica de Catalunya, 2017-09-16)
    Tesi
    Accés obert
    The main objective of the thesis is to study static and/or dynamic properties of a set of quantum fluids by means of quantum Monte Carlo techniques, mainly using the path integral formalism to obtain results both at zero ...
  • Suppression and control of modulation instability 

    Kumar, Shubham (Universitat Politècnica de Catalunya, 2017-06-21)
    Tesi
    Accés obert
    Dynamical instabilities which lead to spontaneous pattern formation are present in a wide variety of nonlinear dynamical systems, both in nature as well as in technological areas. The instabilities may be saturating, leading ...
  • Light beam propagation in complex crystals 

    Kumar, Nikhil P. (Universitat Politècnica de Catalunya, 2017-07-13)
    Tesi
    Accés obert
    Recent advancement in Photonics have brought about a new era of miniaturisation. Along came a need for technology to allow the manipulation of light at the micrometer scale, with precise control over beam propagation. The ...
  • Temporal correlations and dynamical transitions in semiconductor lasers with optical feedback 

    Quintero Quiroz, Carlos Alberto (Universitat Politècnica de Catalunya, 2017-03-16)
    Tesi
    Accés obert
    Optical excitable systems that mimic neuronal behavior have potential to be building-blocks of novel, ultra-fast, neuron-inspired photonic information processing systems. In particular, semiconductor lasers with optical ...
  • Electronic & ionic conduction & correlated dielectric relaxations in molecular solids 

    Zachariah, Manesh (Universitat Politècnica de Catalunya, 2016-11-17)
    Tesi
    Accés obert
    The study of crystalline materials has played a prominent role in solid state physics, whose basic theories were formulated for crystalline matter. However, disordered materials are more abundant in nature than crystalline ...
  • Dynamic stochastic modeling for inertial sensors 

    Wis Gil, Mariano (Universitat Politècnica de Catalunya, 2016-11-02)
    Tesi
    Accés obert
    Es ampliamente conocido que los modelos de error para sensores inerciales tienen dos componentes: El primero es un componente determinista que normalmente es calibrado por el fabricante en el firmware de la IMU. El segundo ...
  • Dynamics of disordered systems 

    Vispa, Alessandro (Universitat Politècnica de Catalunya, 2016-11-24)
    Tesi
    Accés obert
    Disordered systems are ubiquitous in nature and their study is complicated and often leads to controversial results. In any case, the important role of such systems in science and technological applications should not be ...
  • Liquid crystals in woodpile photonic crystals : fabrication, numerical calculation and measurement 

    Ho, Chih-Hua (Universitat Politècnica de Catalunya, 2016-03-14)
    Tesi
    Accés obert
    Both experimental and numerical studies on Liquid Crystal (LC) infiltrated woodpile Photonic Crystal (PhC) are implemented in this thesis. The most well-known optical phenomenon of PhC is photonic bandgap (PBG). It is ...
  • Quantum chemistry and conformational sampling meet together : a powerful approach to study and design metalloprotein reactivity 

    Monza, Emanuele (Universitat Politècnica de Catalunya, 2016-12-19)
    Tesi
    Accés obert
    Metalloprotein are proteins containing metal ion cofactors. Compared to chemical catalysts, metalloproteins have a well-defined configuration around the active site which ensures higher specificity, selectivity and reaction ...
  • Dielectric spectroscopy studies of low-disorder and low-dimensional materials 

    Tripathi, Pragya (Universitat Politècnica de Catalunya, 2016-11-17)
    Tesi
    Accés obert
    In this thesis we employ dielectric spectroscopy (in different implementations) to study the dielectric properties of different materials ranging from completely disordered supercooled liquids to low-disorder solids with ...
  • Stochastic and complex dynamics in mesoscopic brain networks 

    Malagarriga i Guasch, Daniel (Universitat Politècnica de Catalunya, 2017-01-13)
    Tesi
    Accés obert
    The aim of this thesis is to deepen into the understanding of the mechanisms responsible for the generation of complex and stochastic dynamics, as well as emerging phenomena, in the human brain. We study typical features ...
  • High-order hybridizable discontinuous Galerkin method for viscous compressible flows 

    Javadzadeh Moghtader, Mostafa (Universitat Politècnica de Catalunya, 2016-11-04)
    Tesi
    Accés obert
    Computational Fluid Dynamics (CFD) is an essential tool for engineering design and analysis, especially in applications like aerospace, automotive and energy industries. Nowadays most commercial codes are based on Finite ...

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