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Universitat de Barcelona
Browsing Departament d'Electrònica by Subject "53"
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A Novel Column Format for on-Chip Liquid Chromatography Fabricated in Cyclo Olefin Polymer
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 ...
A Novel Sensor Concept for Selective and Self-Powered Gas Detection
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 ...
Advanced TEM imaging tools for materials science
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 ...
Analysis and characterisation of biological samples in nano and microfluidic devices using AC and DC electric fields
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 ...
Análisis dinámico de atmósferas con matrices de sensores mediante procesado de señal no-lineal
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 ...
Atomistic study of structural and electronic transport properties of silicon quantum dots for optoelectronic applications
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 ...
Bioimpedance & dielectrophoresis instrumentation equipments for living cells manipulation and monitoring
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 ...
Bioimpedance monitoring system for pervasive biomedical applications
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 ...
Caracterización por espectroscopia Raman de semiconductores Cu2ZnSnS4 para nuevas tecnologías fotovoltaicas
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 ...
Compositional Engineering of Colloidal Nanoparticles for Energy Conversion
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 ...
Conducting polymers for micro and nano electrodes. Application to biomolecule sensing and release
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 ...
Construction of versatile biomolecule nano-platforms via Dip-pen Nanolithography and their application in bio-sensing and cell differentiation
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, ...
COTS Analog Prototype for LHCb's Calorimeter Upgrade
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 ...
Crystalline and vibrational properties of kesterites
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 ...
Detecció d'estats inadequats per la conducció d'un vehicle a partir de la degradació del control dinàmic
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 ...
Detection of Transcription Factor Binding Sites by Means of Multivariate Signal Processing Techniques
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 ...
Development of a Complete Optical Microsystem for Particle Flow Detection
Esta tesis doctoral resume el trabajo realizado en el Departamento de Electrónica de la Facultad de Física, en la Universidad de Barcelona. El objetivo de la misma se centra en el diseño y fabricación de un microsistema ...
Development of a multi-electrode impedimetric biosensor: detection of pathogenic bacteria and mycotoxins
This thesis aims the development of a multi-electrode platform with applications on different biosensing fields: (i) detection of pathogenic bacteria E.coli O157:H7 and (ii) detection of the mycotoxin Ochratoxin A. For ...
Development of a multichannel integrated circuit for Silicon Photo-Multiplier arrays readout
The aim of this thesis is to present a solution for the readout of Silicon Photo-Multipliers (SiPMs) arrays improving currently implemented systems. Using as a starting point previous designs with similar objectives a novel ...
Development of a nano sensor for direct-electric free-label detection of DNA’s hybridization and single nucleotide polymorphism
The search for analytical tools suitable for wide-scale application of DNA analysis is an hot research topic, although thanks to well-established microarray based technology, analysis of DNA sequences and SNP detection can ...
