Now showing items 1-16 of 16

  • Analysis of droplet dynamics on the GDL surface of a PEM fuel cell cathode 

    Jarauta Arabí, Alexandre (Universitat Politècnica de Catalunya, 2013-06-28)
    Master thesis
    Open Access
    A fuel cell is an electrochemical device that has the ability to turn the chemical energy in a fuel directly into electricity with high e ciency. Inside the fuel cell, oxidation and reduction electrochemical reactions ...
  • An analysis of Bicing mobility patterns using big data 

    Manchón Contreras, Oriol (Universitat Politècnica de Catalunya, 2016-06-23)
    Master thesis
    Open Access
    Nowadays, technology advances really fast and so does the generation of data. Almost all electronic devices are constantly generating and sharing a huge amount of data through the World Wide Web. Moreover, recent policies ...
  • Approximation of phase-field models with meshfree methods: exploring biomembrane dynamics 

    Peco Regales, Christian (Universitat Politècnica de Catalunya, 2014-10-28)
    Doctoral thesis
    Open Access
    Las biomembranas constituyen la estructura de separación fundamental en las celulas animales, y son importantes en el diseño de sistemas bioinspirados. Su simulación presenta desafíos, especialmente cuando ésta implica ...
  • Engineering patterns of wrinkles and bubbles in supported graphene through modeling and simulation 

    Zhang, Kuang (Universitat Politècnica de Catalunya, 2015-06-10)
    Doctoral thesis
    Open Access
    Graphene deposited on a substrate often exhibits out-of-plane deformations with different features and origins. Networks of localized wrinkles have been observed in graphene synthesized through CVD, as a result of compressive ...
  • Machine learning in multiscale modeling and simulations of molecular systems 

    Hashemian, Behrooz (Universitat Politècnica de Catalunya, 2015-05-08)
    Doctoral thesis
    Open Access
    Collective variables (CVs) are low-dimensional representations of the state of a complex system, which help us rationalize molecular conformations and sample free energy landscapes with molecular dynamics simulations. ...
  • Modeling and simulation of active fluids 

    Divi, Sai Chandana (Universitat Politècnica de Catalunya, 2017-06-13)
    Master thesis
    Open Access
    Within cells, the cytoskeleton organizes into polymer networks with unique properties. At short time-scales, they behave elastically. However, due to molecular turnover, at longer time-scales they behave like viscous ...
  • Modelling hydrogels with Onsager’s variational principle 

    Collivadino, Andrea (Universitat Politècnica de Catalunya, 2017-07)
    Master thesis
    Open Access
    The goal of this Master's thesis is to provide a physical and mathematical model that attempts to describe the deformation process of hydrogels. Hydrogels are commonly defined as three dimensional networks of hydrophilic ...
  • Numerical simulation of the dynamics of fluid membranes 

    Grosjean, Laurence (Universitat Politècnica de Catalunya, 2008-07)
    Master thesis
    Open Access
    The goal of this project is to explore the mechanics of lipid fluid membranes as found in biological and made-man systems through continuum models and numerical simulations. Traditionally, the focus has been on the ...
  • Phase field approach to fracture : massive parallelization and crack identification 

    Ziaei-Rad, Vahid (Universitat Politècnica de Catalunya, 2016-05-02)
    Doctoral thesis
    Open Access
    The phase field method has proven to be an important tool in computational fracture mechanics in that it does not require complicated crack tracking and is able to predict crack nucleation and branching. However, the ...
  • Point-set manifold processing for computational mechanics: thin shells, reduced order modeling, cell motility and molecular conformations 

    Millán, Daniel (Universitat Politècnica de Catalunya, 2012-11-12)
    Doctoral thesis
    Open Access
    In many applications, one would like to perform calculations on smooth manifolds of dimension d embedded in a high-dimensional space of dimension D. Often, a continuous description of such manifold is not known, and instead ...
  • Shape dynamics and lipid hydrodynamics of bilayer membranes: modeling, simulation and experiments 

    Rahmi, Mohammad (Universitat Politècnica de Catalunya, 2013-04-09)
    Doctoral thesis
    Open Access
    Biological membranes are continuously brought out of equilibrium, as they shape organelles, package and transport cargo, or respond to external actions. The dynamics of lipid membranes are very complex due to the tight ...
  • A theoretical and computational study of soft adhesion mediated by mobile binders 

    Kaurin, Dimitri (Universitat Politècnica de Catalunya, 2018-10-29)
    Doctoral thesis
    Open Access
    We examine a classical problem in soft-matter physics: the specific adhesion between deformable elastic objects, such as vesicles, mediated by mobile adhesion molecules. This problem is relevant to cell-cell adhesion. To ...
  • A theoretical and computational study of the mechanics of biomembranes at multiple scales 

    Torres-Sánchez, Alejandro (Universitat Politècnica de Catalunya, 2017-07-11)
    Doctoral thesis
    Open Access
    Lipid membranes are thin objects that form the main separation structure in cells. They have remarkable mechanical properties; while behaving as a solid shell against bending, they exhibit in-plane fluidity. These two ...
  • Theoretical and numerical examination of a nonlinear active gel model for the actin cortex of cells 

    Jiménez Ramos, Albert (Universitat Politècnica de Catalunya, 2017-07)
    Bachelor thesis
    Open Access
    In this thesis we review some basic concepts of tensors and differential geometry and apply them to model the actin cortex, an active envelop that determines the shape and mechanical properties of animal cells. The model ...
  • Two-scale model for the mechanics of epithelial tissues 

    de Montaignac, Guilhem (Universitat Politècnica de Catalunya, 2018-06-15)
    Master thesis
    Open Access
    Epithelial cells arrange into two-dimensional cohesive cell layers that perform very important mechanical functions during development and adult physiology. These layers and their cell constituents can be seen as structured ...
  • The variational approach to brittle fracture in materials with anisotropic surface energy and in thin sheets 

    Li, Bin (Universitat Politècnica de Catalunya, 2016-03-08)
    Doctoral thesis
    Open Access
    Fracture mechanics of brittle materials has focused on bulk materials with isotropic surface energy. In this situation different physical principles for crack path selection are very similar or even equivalent. The situation ...