Universitat de Barcelona
Now showing items 95-114 of 172
A Metal-insulator transition (MIT) is the ability of some materials to change between metal and insulator electric behaviours as a function of some external stimuli such as temperature, stress, voltage, magnetic field or ...
ROS (Reactive Oxygen Species), such as H2O2, HO● and O2-●, are naturally produced by the metabolism of living beings. However, they can appear in large quantities in the case of certain diseases (Alzheimer's, Parkinson's, ...
In the last decades, energy requirements of portable devices are exponentially increasing while the capacity of the current battery technology is not progressing accordingly. This energy gap claims for the development of ...
Intensity - Duration - Frequency (IDF) relationships of extreme precipitation events are of high interest in hydrology. The building of infrastructure or designation of flood zone need, as groundwork, the recurrence intervals ...
The interaction of electrons with matter has been a subject of intense work since the beginning of the century. Although we know that the interaction is purely electromagnetic, its theoretical description is ...
Interface-dominated materials such as nanocrystalline thin films have emerged as an enthralling class of materials able to engineer functional properties of transition metal oxides widely used in energy and information ...
[eng] The composition and architecture of the extracellular matrix (ECM), and their dynamic alterations, play an essential regulatory role in numerous cellular processes. Furthermore, structural, and biochemical properties ...
In this thesis we have studied how high energetic excitations propagate through a non- abelian strongly coupled plasma. This new state of matter is produced at heavy ion collisions in our accelerators and allows us to study ...
Solar cells generate electrical power by direct conversion of solar radiation into electricity using semiconductors. Once produced, the solar cells do not require the use of water; operate in silence and can be easily ...
Printed electronics appeared in the 1980s as a cost-effective alternative to silicon-based electronics. Employing the techniques from the graphics industry, such as rotogravure or screen printing, it was possible to print ...
The goal of this thesis is to explore and control the magnetization dynamics on magnetic multilayered thin films through two different techniques: the application of strain and spin- polarized currents, which represent ...
[eng] Transmission Electron Microscopy (TEM), since its first implementation by Ernst August Friedrich Ruska and Max Knoll in 1931, has been an essential technique in the nanoscience and nanotechnology field. In the ...
Complex systems, which involve a massive ammount of components interacting in nontrivial ways and exhibi- ting properties such as emergence, feedback-loops and self-organization, permeate our world to an unthinkable extent. ...
The aim of this thesis is to study the quantum entanglement and, in particular, under which circumstances is maximum. In the first place, Bell's inequalities are analyzed from an operational point of view. In particular, ...
A la relativitat, a diferència de la mecànica newtoniana, no trobem exemples senzills de sistemes dinàmics de diverses partícules. La formulació covariant Lorentz de les equacions del moviment per a sistemes de partícules ...
A finales del siglo pasado Abbe y Rayleigh observaron que los fenómenos de difracción limitaban el poder resolutivo de los instrumentos ópticos. La teoría clásica de aberraciones justificaba también el valor finito del ...
Epidemic modeling has proven to be an essential framework for the study of contagion phenomena in biological, social, and technical systems. Albeit epidemic models have evolved into powerful predictive tools, most assume ...
Lithium-sulfur batteries (LSBs) have attracted extensive research interest for the development of advanced energy storage technology. However, the practical implementation of LSBs still suffers from several intractable ...
[spa] Las propiedades dieléctricas de las células han sido objeto de una intensa investigación a lo largo de los años debido a su relevancia en muchos problemas biológicos fundamentales. Destacamos la importancia de la ...
Scarce supply of clean water and rising water pollution are key global challenges for water sustainability. Much of the wastewater generated by human agricultural and industrial activity is left untreated. Nanotechnological ...
