Now showing items 6-22 of 22

    Holographic light shaping through acousto-optic deflectors 

    Treptow, Dorian (Date of defense: 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 ...

    Cubiertas urbanas y comportamiento térmico en escenarios de temperaturas extremas: del dato al geoservicio 

    Gilabert Mestre, Joan (Date of defense: 2021-05-15)

    Las tendencias de los episodios de temperaturas extremas en las ciudades están aumentando (en frecuencia, magnitud y duración) debido al cambio climático en interacción con el efecto urbano. Otro factor relevante es que ...

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

    del Moral Méndez, Anna (Date of defense: 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 ...

    Flood damage assessment in two western Mediterranean regions. Present conditions and future scenarios 

    Cortés Simó, Maria (Date of defense: 2020-01-21)

    Flooding is one of the main natural hazard in the world causing huge economic and human impacts. Assessing the flood damage in the Mediterranean region is of great importance, mainly due to its pronounced sensitivity to ...

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

    Kuntman, Ertan (Date of defense: 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. ...

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

    Caballero Lucas, Francesc (Date of defense: 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, ...

    Carbon nanotubes grown on stainless steel for supercapacitor applications 

    Pantoja Suárez, Luis Fernando (Date of defense: 2019-09-20)

    The ability of humans to study, manipulate and understand matter at the nanoscale has enabled us to develop materials that can combine physical, chemical, optical, magnetic and mechanical properties that bulk materials do ...

    Precipitació i circulacions mesoescalars en zones d’orografia complexa 

    González Herrero, Sergi (Date of defense: 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 ...

    Implementation of the direct force measurement method in optical tweezers 

    Català i Castro, Frederic (Date of defense: 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 ...

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

    Cáceres León, Richard Humberto (Date of defense: 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 ...

    Precipitation measurements with polarimetric radio occultations 

    Padullés Rulló, Ramon (Date of defense: 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 ...

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

    Montornès Torrecillas, Alex (Date of defense: 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 ...

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

    Mas Soler, Josep (Date of defense: 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 (Date of defense: 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 ...

    Growth Study and Characterization of Single Layer Graphene Structures Deposited on Copper Substrate by Chemical Vapor Deposition 

    Chaitoglou, Stefanos (Date of defense: 2016-11-11)

    Graphene was first isolated from graphite using the method called the tape by scientists at the University of Manchester (Andre Geim, Konstantin Novoselov); such work was later awarded the Nobel Prize in Physics (2010) ...

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

    Caballero Lorenzo, Álvaro (Date of defense: 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 ...

    Procedures for improved weather radar data quality control 

    Altube Vázquez, Patricia (Date of defense: 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 ...