Ara es mostren els items 9-28 de 51

    • c-Si photovoltaic arrays 

      Bermejo Broto, Sandra; Ortega Villasclaras, Pablo Rafael; Castañer Muñoz, Luis María (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
      Text en actes de congrés
      Accés obert
      Crystalline 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 

      Véliz Noboa, Bremnen Marino; Orpella García, Alberto; Bermejo Broto, Sandra (2019-07-19)
      Article
      Accés obert
      In 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% 

      Alcubilla González, Ramón; García Molina, Francisco Miguel; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Orpella García, Alberto; Martín García, Isidro; Colina, M.; Voz Sánchez, Cristóbal; Bermejo Broto, Sandra; Puigdollers i González, Joaquim (Grupo Acorde Comunicación (GAC), 2011-03-01)
      Article
      Accés restringit per política de l'editorial
      Un 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 

      Coll Valentí, Arnau; Bermejo Broto, Sandra; Hernández García, David; Castañer Muñoz, Luis María (2013-01-12)
      Article
      Accés obert
    • Condution mechanisms and charge trapping control in SiO2 nanoparticle MIM capacitors 

      Bheesayagari, Chenna Reddy; Pons Nin, Joan; Orpella García, Alberto; Véliz Noboa, Bremnen Marino; Bermejo Broto, Sandra; Domínguez Pumar, Manuel (2020-06-20)
      Article
      Accés obert
      The 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 

      Bragós Bardia, Ramon; Aoun, Louay; Charosky Larrieu-Let, Guido; Bermejo Broto, Sandra; Rey Micolau, Francesc; Pegueroles Vallés, Josep R. (Universitat Politècnica de Catalunya, 2022-09)
      Text en actes de congrés
      Accés obert
      The 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 

      Bermejo Broto, Sandra; Bragós Bardia, Ramon; Rey Micolau, Francesc; Pegueroles Vallés, Josep R. (NTNU SEED, 2023)
      Comunicació de congrés
      Accés obert
      In 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 

      Alcubilla González, Ramón; García Molina, Francisco Miguel; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Orpella García, Alberto; Martín García, Isidro; Colina, M.; Voz Sánchez, Cristóbal; Bermejo Broto, Sandra; Puigdollers i González, Joaquim (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Text en actes de congrés
      Accés obert
      —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 ...
    • Design and smart control of sensors for optimal performance: a application to wind sensing in Mars 

      Domínguez Pumar, Manuel; Kowalski, Lukasz; Jiménez Serres, Vicente; Pons Nin, Joan; Bermejo Broto, Sandra; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel (2019)
      Text en actes de congrés
      Accés obert
      Sensor performance in terms of time response and sensitivity can be dramatically enhanced by operating sensors under what may be called a “constant state operation”. This means that any change in the sensor due to external ...
    • Dynamic simulation of particle self-assembly applied to microarray technology 

      Virgilio, Vito di; Coll Valentí, Arnau; Bermejo Broto, Sandra; Castañer Muñoz, Luis María (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In 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 

      Castañer Muñoz, Luis María; Bermejo Broto, Sandra; Domínguez Pumar, Manuel (2017-03-31)
      Article
      Accés obert
      In 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 

      Coll Valentí, Arnau; Bermejo Broto, Sandra; Martín García, Isidro; Castañer Muñoz, Luis María (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Comunicació de congrés
      Accés obert
    • EWOD using nonaqueous liquids 

      Ahmadi, Maziar; Bermejo Broto, Sandra; Castañer Muñoz, Luis María (2015-04-18)
      Article
      Accés obert
      Electrowetting 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 

      Prat Viñas, Lluís; Ortega Villasclaras, Pablo Rafael; López González, Juan Miguel; Martín García, Isidro; Fernández, Mireia; Bermejo Broto, Sandra; Altet Sanahujes, Josep; Puigdollers i González, Joaquim; Rodriguez, Angel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2015-01-16)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Altet Sanahujes, Josep; Bermejo Broto, Sandra; Fernández Chimeno, Mireya; Martín García, Isidro; Orpella García, Alberto; Ortega Villasclaras, Pablo Rafael; Prat Viñas, Lluís; Puigdollers i González, Joaquim; Rodríguez Martínez, Ángel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2013-01-08)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Bermejo Broto, Sandra; Fernández Chimeno, Mireya; Guede Fernández, Federico; Martín García, Isidro; López González, Juan Miguel; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Rodríguez Martínez, Ángel; Vargas Drechsler, Manuel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2019-01-15)
      Examen
      Accés restringit a la comunitat UPC
    • Fixed charge density in dielectrics deposited on c-Si using space charge region dominated lifetime measurements 

      Garin Escriva, Moises; Martín García, Isidro; Bermejo Broto, Sandra; Alcubilla González, Ramón (American Institute of Physics, 2007-06-29)
      Article
      Accés restringit per política de l'editorial
      Depletion region modulation (DRM) effect is often observed in photoconductance lifetime measurements of crystalline silicon wafers passivated by dielectric films. This effect is closely related to the space-charge region ...
    • From random to order: Colloidal crystals on non-flat surfaces 

      Coll Valentí, Arnau; Bermejo Broto, Sandra; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; Alcubilla González, Ramón (2016-03-05)
      Article
      Accés obert
      © 2016 Elsevier B.V. All rights reserved. This paper introduces the possibility to produce 1-2 cm2 and tens of layers colloidal crystals on different non-flat surfaces by means of electrospray deposition. Two different ...
    • High voltage ultrathin-photovoltaic minimodules: fabrication technology and application to bioimplantable telesupplying 

      Bermejo Broto, Sandra; Silvestre Bergés, Santiago; Ortega Villasclaras, Pablo Rafael (2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
    • High voltage ultrathin-photovoltaic minimodules: fabrication technology and application to bioimplantable telesupplying 

      Bermejo Broto, Sandra; Silvestre Bergés, Santiago; Ortega Villasclaras, Pablo Rafael (2014-05-01)
      Article
      Accés restringit per política de l'editorial
      In this work we show small (0.49 cm2) and thin (<70 µm) photovoltaic mini-generators capable of providing open circuit voltages up to 99 V and short circuit currents of 43 µA, achieving a maximum density power of 4.8 mW/cm2. ...