Universitat de Barcelona
Now showing items 33-52 of 186
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 ...
[eng] Materials and thin film photovoltaic (TFPV) devices exhibit a high level of complexity, characterized by their multi scale, multi layer, and multi element structures, along with complex manufacturing processes. ...
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, ...
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, ...
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 ...
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 ...
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 ...
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 ...
Los métodos de cálculo y corrección de sistemas ópticos sufrieron una total revolución hacia 1950 con la aparición de las calculadoras electrónicas programables. Su rapidez y potencia de cálculo permiten abordar los ...
Cosmology is the science that studies the Universe as whole, aiming to understand its origin, composition and evolution. During the last decades, cosmology has transitioned from a “data staved” to a “data driven” science, ...
[eng] The overwhelming evidence for the existence of dark matter in the Universe, and the discovery of the neutrino masses, are striking indicators of the need for new physics beyond the ΛCDM and Standard Model paradigms. ...
One of the most serious challenges facing society is the need to reduce the emissions of greenhouse gases such as carbon dioxide (CO2), mainly caused by the widespread use of fossil fuels. The energy transition to renewable ...
[eng] Climate variations at annual to decadal time scales affect many regions around the globe, causing direct impacts on the economy, ecosystems and society. Knowing these variations in advance allows for implementing ...
Galleria mellonella (greater wax moth) is a popular animal model that has been extensively used as an alternative in vivo model for investigating the virulence and pathogenicity of different bacteria. G. mellonella has ...
Lithium-sulfur batteries (LSBs) are regarded as the most promising candidate to replace Lithium-ion batteries (LIBs) in next-generation energy storage systems. Compared with LIBs, LSBs are characterized by a sixfold higher ...
En este trabajo se evalúan cuidadosamente los elementos de matriz nucleares reduciendo muy considerablemente la imprecisión en los resultados finales. Por otra parte por primera vez se consideran posibles transiciones a ...
[eng] A strategy that is being intensively explored to efficiently deliver pharmaceuticals involves drug delivery systems. These carriers should greatly improve the pharmacokinetics of drugs, while providing a selective ...
The application of electron diffraction to crystallographically characterize all kinds of materials has experienced new developments that have attracted some attention in recent years. A large number of structural analyses ...
We have characterized electroluminescent devices based on silicon rich oxide and/or silicon rich nitride. We have discussed the photoluminescence and structural characterization of the active layers and the electrical and ...
In the late 1990's, when sophisticated personal computers and electronic devices with miniaturized sensors were being mass produced, the concept of ambient intelligence (AmI) emerged. An environment ...
