Enviaments recents

  • Design and optimization of a polar satellite mission to complement the Copernicus System 

    Alarcón Cot, Eduardo José; Alvaro Sanchez, A.; Araguz López, Carles; Barrot, G.; Bou Balust, Elisenda; Camps Carmona, Adriano José; Cornara, Stefania; Gutiérrez Peña, Pedro Antonio; Lancheros Sepulveda, Estefany Maria; Lesne, O.; Llaveria Godoy, David; Lluch, I.; Males, Jan; Mangin, A.; Matevosyan, H.; Monge, A.; Narkiewicz, J.; Ourevitch, S.; Pierotti, S.; Pica, U.; Poghosyan, A.; Ruiz de Azúa Ortega, Joan Adrià (Institute of Electrical and Electronics Engineers (IEEE), 2018-06-05)
    Article
    Accés obert
    The space industry is currently witnessing two concurrent trends: the increased modularity and miniaturization of technologies and the deployment of constellations of distributed satellite systems. As a consequence of the ...
  • Sensorless control strategy for light-duty EVs and efficiency loss evaluation of high frequency injection under standardized urban driving cycles 

    Trancho, Elena; Ibarra Basabe, Edorta; Arias Pujol, Antoni; Kortabarria, Iñigo; Prieto Arce, Pablo; Martínez de Alegría, Iñigo; Andreu, Jon; López, Iraide (2018-08-15)
    Article
    Accés restringit per política de l'editorial
    Sensorless control of Electric Vehicle (EV) drives is considered to be an effective approach to improve system reliability and to reduce component costs. In this paper, relevant aspects relating to the sensorless operation ...
  • Diagnosis methodology for identifying gearbox wear based on statistical time feature reduction 

    Saucedo Dorantes, Juan Jose; Delgado Prieto, Miquel; Osornio Rios, Roque A.; Romero Troncoso, René de Jesús (2017-01-01)
    Article
    Accés obert
    Strategies for condition monitoring are relevant to improve the operation safety and to ensure the efficiency of all the equipment used in industrial applications. The feature selection and feature extraction are suitable ...
  • Design and implementation of a sliding-mode controller for digital low-dropout/linear regulators 

    Baheri, Javad; Saberkari, Alireza; Khorgami, Omid; Alarcón Cot, Eduardo José (2018-03-20)
    Article
    Accés obert
    This paper presents an approach to utilize of sliding-mode (SM) controller in digital low-dropout/linear regulators. Various design aspects, including the extraction of the regulator state-space model and sliding coefficients ...
  • Low temperature back-surface-field contacts deposited by hot-wire CVD for heterojunction solar cells 

    Muñoz Cervantes, Delfina; Voz Sánchez, Cristóbal; Martín García, Isidro; Orpella García, Alberto; Alcubilla González, Ramón; Villar, F; Bertomeu Balaguero, Joan; Andreu Batallé, Jordi; Roca-I-Cabarrocas, P (2008-08)
    Article
    Accés obert
    The growing interest in using thinner wafers (< 200 µm) requires the development of low temperature passivation strategies for the back contact of heterojunction solar cells. In this work, we investigate low temperature ...
  • Colloidal crystal wires 

    Tymczenko, M; Marsal, L E; Todorov Trifonov, Trifon; Rodriguez, Isabelle; Ramiro-Manzano, F; Pallares, J; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Meseguer, F (2008-06-18)
    Article
    Accés restringit per política de l'editorial
    Several configurations of colloidal wires are obtained by infiltration of charge-stabilized polystyrene spheres into cylindrical pores of a silicon membrane (see figure). As channel dimensions are comparable to those of ...
  • Increased conductivity of a hole transport layer due to oxidation by a molecular nanomagnet - art. no. 096110 

    Cheylan, Stephanie; Puigdollers i González, Joaquim; Bolink, H J; Coronado, E; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Badenes, G (American Institute of Physics (AIP), 2008-05)
    Article
    Accés restringit per política de l'editorial
    Thin film transistors based on polyarylamine poly(N,N'-diphenyl-N,N'bis(4-hexylphenyl)-[1,1'biphenyl]-4,4'-diamine (pTPD) were fabricated using spin coating in order to measure the mobility of pTPD upon oxidation. Partially ...
  • First use of macroporous silicon loaded with catalyst film for a chemical reaction: a microreformer for producing hydrogen from ethanol steam reforming 

    Llorca Piqué, Jordi; Casanovas Grau, Albert; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2008-04-25)
    Article
    Accés restringit per política de l'editorial
    Macroporous silicon with millions of parallel microchannels per square centimeter can be used as a micromonolithic support for high-speed catalysis in miniaturized systems, opening a new and exciting field of research and ...
  • Optical properties of 3D macroporous silicon structures 

    Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Marsal Garví, Lluís Francesc; Alcubilla González, Ramón (2008-04-15)
    Article
    Accés restringit per política de l'editorial
    We study the optical properties of three-dimensional (3D) microstructures fabricated by electrochemical etching of macroporous silicon with modulated pore diameter. Optical measurements along the pore axis reveal photonic ...
  • Very low surface recombination velocity of crystalline silicon passivated by phosphorus-doped a-SiCxNy:H(n) alloys 

    Ferre, R; Orpella García, Alberto; Muñoz Cervantes, Delfina; Martín García, Isidro; Recart, F; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Cabarrocas, Roca I P; Alcubilla González, Ramón (2008-03)
    Article
    Accés restringit per política de l'editorial
    Hydrogenated and phosphorus-doped amorphous silicon carbonitride films (a-SiCxNy:H(n)) were deposited by plasma-enhanced chemical vapor deposition (PECVD) on crystalline silicon surface in order to explore surface passivation ...
  • Macroporous silicon: a versatile material for 3D structure fabrication 

    Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Marsal, L F; Pallares, J; Alcubilla González, Ramón (2008-02)
    Article
    Accés restringit per política de l'editorial
    This work focuses on the fabrication of three-dimensional (3D) microstructures by electrochemical etching of n-type silicon. We exploit the possibility of modulating the pore diameter along the growing direction to produce ...
  • Characterization of 2D macroporous silicon photonic crystals: improving the photonic band identification in angular-dependent reflection spectroscopy in the mid-IR 

    Král, Z; Ferré Burrull, José; Pallarès Marzal, Josep; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Marsal, L F (2008-02)
    Article
    Accés restringit per política de l'editorial
    We report the experimental characterization of two-dimensional (2D) macroporous silicon photonic crystals using angular-dependent reflectance spectroscopy in the mid-IR region. We have investigated different sample structures ...

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