Now showing items 16-35 of 172

    Band gap grading strategies for high efficiency kesterite based thin film solar cells 

    Andrade Arvizu, Jacob Antonio (Date of defense: 2021-09-10)

    The main subject of this work focuses on the development of advanced technological strategies for bandgap profile engineering on Earth-abundant and eco-friendly kesterite thin film solar cells which potentially optimize ...

    Bioengineering approach to study the role of cell migration during zebrafish heart regneration 

    Tekeli, Işil (Date of defense: 2016-02-03)

    Zebrafish heart regeneration remains one of the most interesting phenomena of the 21st century. Considering the extremely high rate of deaths due to cardiovascular diseases in the developed countries, 1 out of every 3 ...

    Biomechanics of the progression of colorectal carcinomas 

    Fornabaio, Giulia (Date of defense: 2023-04-14)

    [eng] Living tissues are active materials with the ability to undergo drastic shape and dimension transitions. If properly controlled, these morphological changes allow various physiological phenomena such as embryonic ...

    Biophysical properties of single-stranded DNA studied with single-molecule force spectroscopy 

    Viader Godoy, Xavier (Date of defense: 2021-01-29)

    In this thesis, single-molecule experiments using LOT are employed to extract accurate information about the thermodynamics and kinetics of various molecular systems, with special emphasis on the elastic properties of ...

    Bottom-up Engineering of Chalcogenide Thermoelectric Nanomaterials 

    Liu, Yu (Date of defense: 2018-07-12)

    In this thesis, it is detailed the bottom-up production and characterization of thermoelectric (TE) nanomaterials with significant enhanced performance by using colloidal nanocrystals (NCs) as building blocks. The production ...

    Building a Scenario of Physics Beyond the Standard Model in the Flavor Sector 

    Arnan Vendrell, Pere (Date of defense: 2020-09-04)

    Recently lepton flavor universality tests in colliders have reported tensions with the Standard Model, providing an experimental hint at low energies of the effect of a new high energy theory. These tensions are known as ...

    Calculations of water free energy in bulk and large biological systems 

    Coronas Serna, Luis Enrique (Date of defense: 2023-03-28)

    [eng] This thesis develops, validates, and explores applications of the Franzese-Stanley (FS) coarse-grained model for bulk water, ultimately intended to represent the solvent in large-scale simulations of biological ...

    Calorimetric force spectroscopy experiments in DNA and protein folding 

    Rico Pastó, Marc (Date of defense: 2022-03-22)

    In the present thesis, single-molecule experiments have been carried out using optical tweezers with a temperature controller. Employing equilibrium and non-equilibrium experiments, the free energy, enthalpy, and entropy ...

    Catalyst and reactor design for carbon dioxide methanation 

    Alarcón Avellán, Andreina (Date of defense: 2021-04-12)

    The transformation of the current energy model towards a more sustainable mix, independent of fossil fuels, requires the exploration of new technologies that are capable of taking advantage of excess electricity derived ...

    Cell-adhesive nanopatterns for musculoskeletal tissue engineering 

    Casanellas Mercado, Ignasi (Date of defense: 2022-03-17)

    Injuries and conditions of musculoskeletal tissues are among the main causes of disability worldwide and there is a wide need for improved regenerative therapies. In vitro platforms and biomaterials that aim to guide stem ...

    Chemical vapor deposition of hexagonal boron nitride and its use in electronic devices 

    Hui, Fei (Date of defense: 2018-07-23)

    Dielectrics are insulating materials used in many different electronic devices (e.g. capacitors, transistors, barristors), and play an important role in all of them. In fact, the dielectric is probably the most critical ...

    Climate variability predictions for the wind energy industry: a climate services perspective 

    Lledó Ponsatí, Llorenç (Date of defense: 2020-12-09)

    In order to mitigate the climate change effects, the world is undergoing an energy transition from polluting sources towards renewable energies. This transition is turning the electricity system more dependent on atmospheric ...

    Cobalt-based Nanocatalysts for Electrochemical Energy Conversion 

    Wang, Xiang (Date of defense: 2022-07-11)

    Cobalt-based nanomaterials are an important class of electrocatalysts that own abundant and diverse d-orbital electronic structures, and can exhibit excellent HER, OER, EOR catalytic activity and stability in energy ...

    Colloidal Metal Phosphide Nanocrystals for Electrochemical Energy Technologies 

    Liu, Junfeng (Date of defense: 2019-05-10)

    Metal phosphides are an important class of functional materials that exhibit a wide range of applications for energy storage and conversion. However, the synthesis of metal phosphide nanoparticles and its scalability is ...

    Combined Transmission Electron Microscopy and In-Situ Scanning Tunneling Microscopy Characterization of Nanomaterials 

    Martín Malpartida, Gemma (Date of defense: 2018-07-02)

    The main goal of this thesis has been to apply in-situ Transmission Electron Microscopy (TEM) electrical measurements using a Scanning Tunneling Microscopy (STM) tip, combined with TEM imaging and spectroscopic techniques, ...

    Competition and Response: from Active Matter to Electrolytes under Confinement 

    Dal Cengio, Sara (Date of defense: 2020-12-16)

    Most systems in Nature manifest complex transport phenomena arising from the interplay of multiple time and length scales, be them intrinsic in the system’s dynamics or externally enforced. It is the case, for instance, ...

    Complex Oxide Heterostructures for Spin Electronics 

    Martín Río, Sergi (Date of defense: 2022-07-05)

    The direct manipulation of spin currents with no charges involved along with the delicate interplay between charge, spin and orbital degrees of freedom in materials and structures has attracted a renewed interest in the ...

    Contribució al desenvolupament, optimització i regeneració de sensors d’oxigen per al control d’humitat en entorns d’alta temperatura 

    Blanes Guàrdia, Mireia (Date of defense: 2021-12-13)

    Els treballs realitzats en aquesta tesi doctoral s’han dirigit cap al desenvolupament, optimització i regeneració dels sensors d’oxigen per a la detecció d’humitat en entorns d’alta temperatura per acomplir amb un objectiu ...

    Contribución al estudio de la influencia de los centros profundos en los diodos Schottky 

    Esteve Pujol, Joan (Date of defense: 1976-10-01)

    Dentro del gran desarrollo que en nuestros dias tienen los dispositivos electrónicos de estado sólido, el contacto metal –semiconductor diodo Schottky ha encontrado recientemente un interés renovado. Diversos progresos ...

    Contribución al estudio de la turbiedad atmosférica en Barcelona 

    Lorente, Jeroni (Date of defense: 1977-12-20)

    A partir de los cálculos de la atenuación de la radiación solar directa a incidencia normal en ciertos intervalos espectrales y utilizando como instrumentos de medida un actinómetro Linke-Feussner y varios heliofotómetros ...