Browsing by Author "Bermejo Broto, Sandra"
Now showing items 1-20 of 49
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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 ... -
Acceleration and drift reduction of MOX gas sensors using active sigma-delta controls based on dielectric excitation
(2022-08-15)
Article
Restricted access - publisher's policyThe 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% ... -
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, ... -
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) ... -
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 ... -
Dynamic simulation of particle self-assembly applied to microarray technology
(2010)
Conference report
Restricted access - publisher's policyIn this work we want to explore some techniques, microfluidic and electrosprayionization based, suitable for dynamic microarrays' fabrication. The fabrication techniques are based on manipulation and self-assembly of ... -
Effect of dielectrophoretic force in the self-assembly process of electrosprayed nanoparticles
(2017-03-31)
Article
Open AccessIn this work the effect of the dielectrophoretic force (DEP) in the self-assembly process of nanoparticles electrosprayed onto a substrate, is examined. DEP force is originated by the electric field created by the electrospray ... -
Effect of nanofluid conductivity and humidity on the self-assembly of colloidal crystals by means of electrospray
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Conference lecture
Open Access -
EWOD using nonaqueous liquids
(2015-04-18)
Article
Open AccessElectrowetting on Dielectric (EWOD) has been studied for more than a decade and used for different applications but still there are few works on non-aqueous liquids such as mixtures of polyols. We have found that significant ... -
Examen Final
(Universitat Politècnica de Catalunya, 2013-01-08)
Exam
Restricted access to the UPC academic community
