Holographic light shaping through acousto-optic deflectors 

    Treptow, Dorian (Fecha de defensa: 2021-05-18)

    The invention of the laser in the 1960s triggered a new era of optical technologies which revolutionized many fields of industry and research. At the same time, a new demand for technologies emerged that allow to dynamically ...

    Impacto de la asimilación radar en el pronóstico de precipitación a muy corto plazo usando el modelo WRF 

    Cáceres León, Richard Humberto (Fecha de defensa: 2018-11-08)

    El propósito de esta investigación es maximizar el impacto de la asimilación de datos radar sobre el pronóstico de precipitación a muy corto plazo usando el modelo Weather Research and Forecasting (WRF), de tal manera que ...

    Implementation of the direct force measurement method in optical tweezers 

    Català i Castro, Frederic (Fecha de defensa: 2018-12-18)

    Mechanics is the branch of physics that studies movement and force, and plays an evident role in life. The swimming dynamics of bacteria in search of nutrients, organelle transport by molecular motors or sensing different ...

    Investigation on force detection methods for optical trapping and sensing inside living cells 

    Mas Soler, Josep (Fecha de defensa: 2017-01-09)

    Optical Tweezers (OT) are a light-based non-invasive tool that has played an important role during the last decades in the field of biophotonics, together with the advances in optical microscopy techniques. Optical trapping ...

    Laser direct-writing for microfabrication 

    Florian Baron, Camilo (Fecha de defensa: 2016-07-26)

    Digital manufacturing constitutes a real industrial revolution that is transforming the production processes from the early stages of research and development to mass production and marketing. The biggest difference in ...

    Mathematical work on the foundation of Jones-Mueller formalism and its application to nano optics 

    Kuntman, Ertan (Fecha de defensa: 2019-12-19)

    Jones matrix and nondepolarizing Mueller matrix are the basic elements of the calculus of polarization optics. In this thesis we discus other forms that can be used to represent optical properties of deterministic systems. ...

    Optimization of hydrogenated amorphous silicon for its use in different photovoltaic technologies 

    Caballero Lorenzo, Álvaro (Fecha de defensa: 2016-06-23)

    The main objective of this work is to study and optimize the amorphous silicon deposited in a PECVD reactor of recent acquisition, making it suitable for thin film and c-Si based solar cells. Optimization of intrinsic ...

    Precipitació i circulacions mesoescalars en zones d’orografia complexa 

    González Herrero, Sergi (Fecha de defensa: 2019-07-11)

    L’orografia té un impacte molt important en la circulació del vent i en la precipitació a totes les escales, des de la microescala fins a la macroescala. La complexitat i la singularitat de les interaccions entre el relleu ...

    Precipitation measurements with polarimetric radio occultations 

    Padullés Rulló, Ramon (Fecha de defensa: 2017-06-22)

    In 2009, the Spanish Ministry of Science and Innovation approved a proposal to modify the Global Positioning System (GPS) receiver and to allocate a Polarimetric (Pol) Radio Occultation (RO) antenna in the Spanish PAZ ...

    Precipitation phase discrimination: diagnosing and nowcasting 

    Casellas Masana, Enric (Fecha de defensa: 2022-05-20)

    Precipitation phase discrimination at ground level constitutes a fundamental variable in many meteorological and hydrological applications, including avalanche hazards, winter road safety, and flooding from rain on snow ...

    Procedures for improved weather radar data quality control 

    Altube Vázquez, Patricia (Fecha de defensa: 2016-12-21)

    Weather radar data and its downstream products are essential elements in weather surveillance and key parameters in the initialisation and validation of hydrological and meteorological models, among other downstream ...

    Radar-based nowcasting of severe thunderstorms: A better understanding of the dynamical influence of complex topography and the sea 

    del Moral Méndez, Anna (Fecha de defensa: 2020-07-20)

    Natural disasters of hydro-meteorological origin are the biggest risk worldwide. In Catalonia (NE of the Iberian Peninsula), severe weather and flash floods occur each year, resulting in major damage to property, losses ...

    Selective contacts for crystalline silicon solar cells 

    Tom, Thomas (Fecha de defensa: 2023-07-13)

    [eng] Global energy use has increased, causing a rapid shift in the climate. Renewable energy sources such as solar energy must replace fossil fuels to slow down this trend. In order to achieve this, the amount of power ...

    A study of the shortwave schemes in the Weather Research and Forecasting model 

    Montornès Torrecillas, Alex (Fecha de defensa: 2017-02-09)

    The radiative transfer cannot be explicitly resolved in the atmospheric models for two reasons: i) a full treatment of the radiative transfer equation (RTE) requires a high amount of computational resources and ii) the ...

    Tornadic events in the Iberian Peninsula and Balearic Islands: characteristics and environmental conditions 

    Rodríguez i Ballester, Oriol (Fecha de defensa: 2021-05-06)

    Tornadoes are the meteorological phenomenon which can produce the strongest surface wind on Earth, causing damage, injuries and fatalities. Several studies show that severe storm environments could be more frequent due to ...

    Z-scan methods for ultrashort pulsed laser microprocessing of transparent materials 

    Caballero Lucas, Francesc (Fecha de defensa: 2019-10-15)

    The use of femtosecond lasers has recently gained attention as a result of the recognition to Gérard Mourou and Donna Strickland with the award of the Nobel Prize in Physics 2018 "for their method of generating high-intensity, ...