Exploració per tema "Superconductors"

Ara es mostren els items 21-40 de 49

    • Excitonic insulator to superconductor phase transition in ultra-compressed helium 

      Liu, Cong; Errea Lope, Ion; Ding, Chi; Pickard, Chris J.; Conway, Lewis J.; Monserrat Sánchez, Bartomeu; Fang, Yue Wen; Lu, Qing; Sun, Jian; Boronat Medico, Jordi; Cazorla Silva, Claudio (2023-07-25)
      Article
      Accés obert
      Helium, the second most abundant element in the universe, exhibits an extremely large electronic band gap of about 20 eV at ambient pressures. While the metallization pressure of helium has been accurately determined, thus ...

    • Fabrication of melt-textured cylinders and bars of (YBa2Cu3O7-Y2BaCuO5) superconductors 

      Piñol Vidal, Salvador; Yu, R; Vilalta, Nuria; Sandiumenge, Felip; Gomis Arbonès, Vicente; Martínez, Benjamín; Mora Serrano, Javier; Fontcuberta, Josep; Obradors Berenguer, Xavier (1996)
      Comunicació de congrés
      Accés restringit per decisió de l'autor
      Cylinders and bars of bulk YBa2CuO7-Y2BaCuO5 textured ceramic composites (123-211) have been prepared through different directional solidification processes. Green ceramic preforms for the directional solidification process ...

    • Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300 K 

      Konstantopoulou, K; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Segarra Rubi, Merce; Pastor, J. Y. (2014-09-01)
      Article
      Accés restringit per política de l'editorial
      In this study two YBa2Cu3O7-delta bulk superconductors were evaluated, with the aim of analyzing the influence of the processing method (TSMG and Bridgman) and the test temperature on their mechanical behavior. The ...

    • Full wave modelling of hts dual mode patch filters and staggered coupled-line filters 

      Flores Jiménez, Alejandro; Collado Gómez, Juan Carlos; Sans, C.; O'Callaghan Castellà, Juan Manuel; Pous Andrés, Rafael; Fontcuberta, Josep (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1997-06-30)
      Article
      Accés obert
      In order to obtain high-power handling, dual-mode patch HTS filters have been analyzed through Green's function and desegmentation techniques. A precise circuit model has been obtained and applied to the filter design ...

    • Impact of flux jumps in future colliders 

      Coello de Portugal-Martinez Vazquez, Jaime Maria; Tomas García, Rogelio; Fiscarelli, Lucio; Gamba, Davide; Martino, Michele (American Physical Society (APS), 2020-01-02)
      Article
      Accés obert
      Type-II superconductors, like the Nb3Sn used in the new HL–LHC quadrupole triplet and 11 T dipoles or FCC dipoles, are known to show an unstable behavior during magnetic-field ramps. This paper presents an analysis of the ...

    • Impacto de un cable superconductor sobre la eficiencia energética de la red eléctrica 

      Romedenne Lagrange, Olivier (Universitat Politècnica de Catalunya, 2008-12)
      Projecte/Treball Final de Carrera
      Accés obert
      El objetivo de este proyecto es el de realizar una evaluación de la eficiencia del sistema eléctrico, centrándose en los conjuntos de cables, y estudiar el impacto que el uso de la emergente tecnología superconductora ...

    • Improving the fabrication of all-polythiophene supercapacitors 

      Sánchez Jiménez, Margarita; Estrany Coda, Francesc; Alemán Llansó, Carlos (2017-03-01)
      Article
      Accés obert
      The influence of the preparation method in the properties of poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes used to manufacture organic energy storage devices, as for example supercapacitors, have been examined by ...

    • Interface porosity in multilayered all-conducting polymer electrodes 

      Borràs Cristòfol, Núria; Estrany Coda, Francesc; Alemán Llansó, Carlos (2019-06-13)
      Article
      Accés obert
      Multilayered films made with at least two different electroactive polymers, in which the least conducting one acts as a dielectric and separates the layers made with the other, behave as efficient electrodes for electrochemical ...

    • Ionic liquid gating in encapsulated hBN/MoS2/hBN devices 

      Rodan Legrain, Daniel (Universitat Politècnica de Catalunya, 2016-05-25)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Massachusetts Institute of Technology
      The ability to produce few-atoms-thick two-dimensional materials of high quality such as graphene, transition-metal dichalcogenides and hexagonal boron nitride is a major improvement in condensed-matter physics and in ...

    • La superconductividad: un potencial muy atractivo 

      Lloret Gallego, Pau; Molas Balada, Lluís; Villafafila Robles, Roberto; Sudrià Andreu, Antoni; Rull Duran, Joan; Sumper, Andreas (Grupo Tecnipublicaciones, 2008-02)
      Article
      Accés restringit per política de l'editorial
      La superconductividad es la capacidad que poseen ciertos materiales de presentar una resistencia al paso de la electricidad prácticamente nula en determinadas condiciones. Así, las pérdidas de energía son cercanas a cero, ...

    • Linealización de resonadores superconductores 

      Padilla Díaz, Alberto (Universitat Politècnica de Catalunya, 2008-07-24)
      Projecte/Treball Final de Carrera
      Accés obert
      Los materiales superconductores de alta temperatura (HTS) permiten realizar dispositivos de muy altas prestaciones y dimensiones muy reducidas. Sin embargo, estos materiales presentan un comportamiento no-lineal ...

    • Magnetical response and mechanical properties of second generation of HTSC, YBCO materials 

      Roa Rovira, Joan Josep; Dias, F.T.; Segarra, M. (InTech — Open Access Company, 2012-05-15)
      Capítol de llibre
      Accés obert

    • Mechanical characterization at nanometric scale of ceramic superconductor composites 

      Roa Rovira, Joan Josep; Capdevila, X.G.; Segarra, M. (NovasScience Publishers, 2009)
      Capítol de llibre
      Accés restringit per política de l'editorial

    • Mechanical characterization at nanometric scale of ceramic superconductor composites I 

      Roa Rovira, Joan Josep; Capdevila, X.G.; Segarra, M. (NovasScience Publishers, 2009)
      Capítol de llibre
      Accés restringit per política de l'editorial

    • Modeling superconducting transmission line bends and their impact on nonlinear effects. 

      Mateu Mateu, Jordi; Collado Gómez, Juan Carlos; O'Callaghan Castellà, Juan Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-05-31)
      Article
      Accés obert
      This paper reports on a numerical technique to obtain the current distribution in the annular bent sections of planar layouts. This is used to obtain the linear and nonlinear circuit distributed parameters modeling a ...

    • Modelització dinàmica d'un cable superconductor 

      Gelabert Serra, Miquel Jeroni (Universitat Politècnica de Catalunya, 2010-03)
      Projecte/Treball Final de Carrera
      Accés obert
      En aquest Projecte Fi de Carrera es desenvolupa el model din amic d'un cable superconductor per el transport i distribució d'energia el ectrica. De la necessitat de realitzar estudis dinàmics del comportament de la xarxa ...

    • Modelo híbrido para la simulación de un Superconductor de Tipo-I 

      Villuendas Pellicero, Diego (Universitat Politècnica de Catalunya, 2008-09-15)
      Projecte Final de Màster Oficial
      Accés obert
      En este trabajo se presenta un modelo para estudiar los superconductores de tipo-I. El objetivo principal es reproducir el estado intermedio, en el que regiones del material han transitado al estado normal mientras el resto ...

    • Nano-mechanical properties of silver-welded YBCO bulks 

      Roa Rovira, Joan Josep; Bartolomé, E.; Bozzo, Bernat; Capdevila, X.G.; Granados García, Javier A.J.; Segarra, M. (2010-02-09)
      Article
      Accés obert
      The mechanical properties of melt-textured YBCO bulk boundaries are a topic of special interest especially in the manufacturing of superconductor devices for engineering applications. Instrumented indentation technique ...

    • Nanoindentation with spherical tips of single crystals of YBCO textured by the Bridgman technique: Determination of indentation stress-strain curves 

      Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Capdevila, X.G.; Segarra, M. (2010-04)
      Article
      Accés restringit per política de l'editorial
      The mechanical properties of superconductor ceramics are of interest in the manufacture of superconducting devices. The current trend is to produce smaller devices (using, e.g., thin films), and the correct characterization ...

    • Performance of high-temperature superconducting REBCO coated conductors under synchrotron irradiation for future circular colliders 

      Krkotic, Patrick; Traver Ramos, Oriol; Tagdulang, Nikki; Calatroni, Sergio; O'Callaghan Castellà, Juan Manuel; Pont Montaner, Montserrat (Institute of Physics (IOP), 2023-10-01)
      Article
      Accés obert
      The influence of medium-to-high energy synchrotron radiation (SR) (˜10–100 keV) produced by the ALBA Synchrotron Light Source on state-of-the-art REBCO coated conductors (CCs) has been studied to assess the feasibility of ...