Universitat de Barcelona
Now showing items 1-18 of 18
En aquest treball s'ha establert una metodologia d'anàlisi i caracterització del comportament tèrmic, mecànic i termomecànic d'estructures micromecanitzades per a sensors de gas a través de la combinació de simulacions ...
A lo largo de este trabajo se ha estudiado la metodología de análisis de óxidos de silicio mediante elipsometría, la espectroscopía infrarroja y la espectroscopía de fotoelectrones de rayos X (XPS). Se han establecido las ...
CuInS2 is a good candidate as photovoltaic absorber for the fabrication of high efficient and low cost solar cells. In this work, the vibrational properties of CuInS2 films have been studied by means of Raman Spectroscopy, ...
La tecnología microelectrónica esta entrando a formar parte de la vida cotidiana. Así, además del ordenador PC, tanto en los vehículos, como en las viviendas es difícil encontrar equipos o subsistemas eléctricos que no ...
Sabemos la centralidad que la noción de estado electro-tónico tuvo en la primera formulación de las ecuaciones de Maxwell. El concepto, sin embargo, proviene de Faraday, que lo introdujo a raíz de su descubrimiento de la ...
In the continuous evolution of mobile communication systems, there are many issues and aspects to be addressed, as well as in their effective implementation and deployment on cellular networks. In a general way, the most ...
L'espectroscòpia òptica dels ions Tm3+ i Yb3+ en tungstats dobles monoclínics és molt important per desenvolupar dispositius làser d'estat sòlid. Els tungstats dobles monoclínics són molt interessants pels avantatges que ...
The context of this thesis is the design of CMOS low power RFIC's suitable for direct conversion architectures. Our starting point is the analysis of the characteristics of the integrated passive components (inductors and ...
The goal of this dissertation is the study and characterisation of high dose Carbon (C) implantation processes into Silicon (Si) and related materials for the synthesis of Silicon Carbide (SiC). The attainment of ...
Recently, there has been an increasing interest in the electronics world for those aspects related to semiconducting gas sensor (SGS) materials. In view of the increasingly strict legal limits for pollutant gas emissions, ...
Metallic deposits can be produced on the surface of silicon crystals by immersion in aqueous solutions containing fluoride and the metallic ions. This work aims to elucidate the general mechanism of the deposition process, ...
Ambient intelligence is going to focus the next advances in wireless technologies. Hence, the increasing demand on radio frequency (RF) devices and applications represents, not only a challenge for technological industries ...
Dentro del amplísimo campo de los sensores, están emergiendo con gran fuerza los dispositivos basados en tecnología de silicio. El uso de la tecnología microelectrónica para la producción de sensores permite obtener ...
En la primera parte de este trabajo se analizan diferentes técnicas experimentales tales como la Fotoluminiscencia (PL); Absorción Óptica (AO); Fotoexcitación de la Luminiscencia (PLE) Admitancia, que hemos utilizado para ...
The high quality CuxS nanocrystals were synthesized (Chapter 3) and the profound understanding and skills to prepare colloidal nanocrystals has been obtained and improved. It revealed a very simple synthetic route not only ...
Due to recent progress, higher-order chemical instrumentation provides large amounts of data which need automated processing in order to extract relevant information. In most cases, the raw signals or spectra are too complex ...
This thesis focuses on the use of smart materials in microrobotic applications. The development of materials with the capabilities to mechanically respond to electrical stimuli or, at the same time, to electrically respond ...
This doctoral dissertation deals with the study of nanocrystalline tungsten oxide-based powders for gas sensing applications. Gas monitoring is receiving increasing attention due to environmental and safety reasons. Gas ...
