Universitat de Barcelona
Now showing items 1-20 of 100
This thesis describes a novel column format to be used in pressure-driven reversed-phase liquid chromatography. The column contains an ordered pillar array where the stationary phase is supported, and it is fabricated in ...
Les tecnologies de sensors de gas basades en semiconductors presenten limitacions importants de selectivitat i consum d'energia. Per tant, esdevé necessari l’assaig de nous conceptes de dispositius capaços de satisfer ...
Being able to directly relate the final properties with the intimate structure provides a unique insight into the functionality of materials and devices, especially when compared to the necessarily statistical nature of ...
The present thesis work titled “Analysis and characterisation of biological samples in nano and microfluidic devices using AC and DC electric fields” has as main objective study the effects that electric fields have biologic ...
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 ...
El presente trabajo se enmarca dentro de las tareas centradas en el campo de modelización y procesado de señal, desarrolladas en el Departament d’Electrònica de la Facultad de Física de la Universitat de Barcelona. En ...
Introduction It is undisputed that the silicon became the material most widely used in electronics in recent decades[1,2]. The qualities of silicon are well known, from its abundance and low cost to its ability to easily ...
Since the first microfluidic device was developed in the early 1950s, when the basics for today’s inkjet technology were set, thousands of publications have appeared related to the topic. The increasing interest on these ...
Nowadays, Point-of-Care (PoC) are making a shifting of the classical medical procedures and treatment protocols, enhancing the performance of medical surveillance in all the world. It is a reliable and very cost-effective ...
El trabajo se ha centrado en el análisis del compuesto Cu2ZnSnS4 (CZTS) mediante la técnica de espectroscopia de dispersión Raman, para una mayor optimización de los procesos de crecimiento de capas absorbedoras y la ...
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, ...
The main objective of this thesis focuses on compositional design and engineering colloidal NPs and their application in energy conversion. This principally included the synthesis and characterization of colloidal NPs, and ...
This thesis aims at providing a better understanding of the micro- and nanofabrication of conducting polymers for biomedical devices and presents novel processes that widen the application range of conducting polymers in ...
The present thesis entitled “Construction of versatile biomolecule nano-platforms via Dip-pen Nanolithography and their application in bio-sensing and cell differentiation” aims at contributing to the field of Nanobiotechnology, ...
The objective of this thesis is to present a proposal for the analogue signal processing chain needed for the LHCb calorimeter upgrade improving the design used originally. The design contains several novelties: the ...
The main objective of this thesis is to deepen the knowledge of fundamental properties of kesterite materials (Cu2ZnSnS4 and Cu2ZnSnSe4) and their solid solutions Cu2ZnSn(S,Se)4, which are used as absorber layers in solar ...
Aquesta tesi descriu el desenvolupament d’un microgenerador ressonant compatible amb la tecnologia de Si, especialment adequat per extreure energia mecànica residual de l’ambient. Aquesta mena de font “perpètua” d’energia ...
Una de les principals causes d’accidents d’automòbil és l’estat inadequat del conductor. Diversos estudis situen entre el 16% i el 30% el nombre d'accidents de trànsit relacionats amb el cansament, fatiga, somnolència i ...
Gene expression is a complex and highly regulated process. Most of the regulation is controlled by short DNA sequences that can be bound by some proteins called transcription factors (TF). Binding to these sites, the ...
