Browsing by Author "Bermejo Broto, Sandra"
Now showing items 1-20 of 60
-
A miniaturized 3d heat flux sensor to characterize heat transfer in regolith of planets and small bodies
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-08-01)
Article
Open AccessThe objective of this work is to present the first analytical and experimental results obtained with a 3D heat flux sensor for planetary regolith. The proposed structure, a sphere divided in four sectors, is sensible to ... -
A novel dual-parameter proximity and touch sensor using SiO2 nanoparticles and NaCl with commercial acrylic-based encapsulation
(Elsevier, 2024-06)
Article
Open AccessThis study shows the development and analysis of a novel capacity proximity sensor (CPS) based on a sensing layer made up of a mixture of silicon dioxide nanoparticles (SiO2) and sodium chloride (NaCl), and an encapsulation ... -
Accelerating hydrogen sensing with Pd-Mos capacitors using active controls of trapped charge
(Elsevier, 2024-11)
Article
Open AccessHydrogen monitoring with reliable, fast and cheap sensors is crucial to fully exploit the potential of this gas as an energy vector. One of the most appealing technologies for hydrogen sensing is based on MOS capacitors ... -
Acceleration and drift reduction of MOX gas sensors using active sigma-delta controls based on dielectric excitation
(2022-08-15)
Article
Open AccessThe objective of this paper is to apply a closed-loop control based on dielectric excitation to MOX gas sensors in order to improve their response time. The control implements a feedback loop in which temperature modulations ... -
Acceleration of the measurement time of thermopiles using sigma-delta control
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-18)
Article
Open AccessThis work presents a double sliding mode control designed for accelerating the measurement of heat fluxes using thermopiles. The slow transient response generated in the thermopile, when it is placed in contact with the ... -
Accurate and wide field of view MEMS-based sun sensor for industrial applications
(IEEE Press. Institute of Electrical and Electronics Engineers, 2012-02-24)
Article
Restricted access - publisher's policyThis paper describes the design, fabrication, simulation, and experimental results of an improved miniaturized two-axis sun sensor for industrial applications, created by adapting a technology used previously in satellite ... -
Adaptación de una asignatura de electronica digital a la semipresencialidad y al Espacio Europeo de Educación Superior
(2010)
Conference report
Open AccessEste trabajo describe y analiza la evolución del formato semipresencial de la asignatura Sistemas Digitales 1, inicialmente impartida dentro de una titulación de segundo ciclo y actualmente adaptada al EEES e impartida ... -
Advances in a baseline process towards high efficiency c-Si solar cell fabrication
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009-02-11)
Conference report
Open Access -
Al2O3/TiO2 inverse opals from electrosprayed self-assembled templates
(2018-01-19)
Article
Open AccessThe fabrication of high optical quality inverse opals is challenging, requiring large size, three-dimensional ordered layers of high dielectric constant ratio. In this article, alumina/TiO2–air inverse opals with a 98.2% ... -
Analysis and impedance modeling of silica and polystyrene nanoparticles in EMIM structures for humidity sensing applications
(2024-08-31)
Article
Open AccessThis work shows the fabrication technology details and a proposed impedance spectroscopy modeling of Electrosprayed-nanoparticles Metal Insulator Metal (EMIM) structures, and their potential as humidity sensors. The impedance ... -
Analyzing the performance of a miniature 3D wind sensor for Mars
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-20)
Article
Open AccessThis paper analyzes the behavior of a miniature 3D wind sensor designed for Mars atmosphere. The sensor is a spherical structure of 10 mm diameter divided in four sectors. By setting all the sectors to constant temperature, ... -
Boosting the sensitivity and hysteresis of a gel polymer electrolyte by embedding SiO2 nanoparticles and PVP for humidity applications
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-01-10)
Article
Open AccessEnhancing sensitivity and hysteresis in capacitance humidity sensors is vital for precise, reliable, and consistent humidity control. This study explores this concern by incorporating polyvinylpyrrolidone (PVP) and SiO2 ... -
c-Si photovoltaic arrays
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
Conference report
Open AccessCrystalline silicon small photovoltaic arrays are shown. Electrical isolation of individual cells and series connection between them to integrate series arrays are discussed. High open circuit voltage values in the range ... -
Capacitance study of a polystyrene nanoparticle capacitor using impedance spectroscopy
(2019-07-19)
Article
Open AccessIn this study, a metal-insulator-metal capacitor structure is fabricated using polystyrene nanoparticles. Impedance spectroscopy is used to evaluate the performance of this capacitor in which we found a significant magnitude ... -
Células fotovoltaicas con un rendimiento del 20.5%
(Grupo Acorde Comunicación (GAC), 2011-03-01)
Article
Restricted access - publisher's policyUn grupo de investigadores de la Universitat Politècnica de Catalunya (UPC) han desarrollado un proceso de fabricación que permite obtener rendimientos de conversión fotovoltaicos del 20,5%. Esto supone una mejora sustancial ... -
Colloidal crystals by electrospraying polystyrene nanofluids
(2013-01-12)
Article
Open Access -
Condution mechanisms and charge trapping control in SiO2 nanoparticle MIM capacitors
(2020-06-20)
Article
Open AccessThe objective of this paper is to present a charge trapping control method for MIM capacitors in whichthe dielectric is made of electrospray-deposited silica nanoparticles. The influence of the bias voltage onthe impedance ... -
Correlation study between the access mark and the performance in project-based and standard courses
(Universitat Politècnica de Catalunya, 2022-09)
Conference report
Open AccessThe access mark to engineering studies is often used as an a priori success estimator. In our institution, we have observed that the correlation of the access mark with the grades obtained in project-based courses (R=0.52) ... -
Correlation study between the performance in different engineering courses and project-based courses
(NTNU SEED, 2023)
Conference lecture
Open AccessIn a previous study, already published (Bragós, 2022), we analyzed the correlation between the University access mark to the engineering studies with the grades obtained in projectbased courses and in non-project-based ... -
Crystalline silicon solar cells beyond 20% efficiency
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
Conference report
Open Access—This paper describes a fabrication process to obtain high efficiency c-Si cells (> 20%) based on the Laser Fired Contact Passivated Emitter Rear Cell (LFC-PERC) concept. Photovoltaic efficiencies beyond 20% have ...
