Ara es mostren els items 1-10 de 10

    • A study on the feasibility of a battery-based electric propulsion system for ONAerospace eVTOL 

      Bou Plaza, Carles (Universitat Politècnica de Catalunya, 2023-02-15)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   ONAerospace
      The purpose of this project is to perform a study on the current and near-future feasibility of a battery system for commercial and regional aviation. Analysing the energy requirements of the ONA eVTOL and the different ...
    • Black silicon solar cells with interdigitated back-contacts achieve 22.1% efficiency 

      Savin, Hele; Repo, Päivikki; von Gastrow, Guillaume; Ortega Villasclaras, Pablo Rafael; Calle, Eric; Garin Escriva, Moises; Alcubilla González, Ramón (2015-05-18)
      Article
      Accés obert
      The nanostructuring of silicon surfaces—known as black silicon—is a promising approach to eliminate front-surface reflection in photovoltaic devices without the need for a conventional antireflection coating. This might ...
    • Epitaxial BaZrO3 tracks by electrospinning of metalorganic fibers on single crystals 

      Obradors i Berenguer, Francesc Xavier; Calleja Lázaro, Albert; Ricart Miró, Susagna; Granados García, Javier A.J.; Palmer Paricio, Xavier; Solano Reina, Enrique; Tornero García, José Antonio; Cano Casas, Francesc; Puig Molina, Teresa (2012-07-21)
      Article
      Accés restringit per política de l'editorial
    • Improved thermal isolation of silicon suspended platforms for an all-silicon thermoelectric microgenerator based on large scale integration of Si nanowires as thermoelectric material 

      Fonseca, L.; Donmez, I.; Salleras, M.; Calaza, C.; Gadea, G.; Santos, J.D.; Morata, A.; Tarancon, A. (2015-12-10)
      Article
      Accés obert
      Special suspended micro-platforms have been designed as a part of silicon compatible planar thermoelectric microgenerators. Bottom-up grown silicon nanowires are going to bridge in the future such platforms to the surrounding ...
    • Influence of growth parameters on the optical properties of ZnO nanowires 

      Pohardy, Nicolas (Universitat Politècnica de Catalunya, 2010-09-10)
      Projecte Final de Màster Oficial
      Accés obert
      ZnO nanowires are source of a great interest in the scientific community due to numerous properties and the wide range of possible applications of this nanoscale material. Influence of the ZnO NWs growth parameters such ...
    • Observation of the topological Anderson insulator in disordered atomic wires 

      Meier, Eric J.; An, Fangzhao Alex; Dauphin, Alexandre; Maffei, Maria; Massignan, Pietro Alberto; Hughes, Taylor L.; Gadway, Bryce (2018-11-23)
      Article
      Accés obert
      Topology and disorder have a rich combined influence on quantum transport. In order to probe their interplay, we synthesized one-dimensional chiral symmetric wires with controllable disorder via spectroscopic Hamiltonian ...
    • Optical characterization of molecular beam epitaxy grown GaAs nanotrees 

      Garcia Garcia, óscar (Universitat Politècnica de Catalunya, 2018-07)
      Treball Final de Grau
      Accés obert
      In the aim to grow vertical self-catalyzed GaAs nanowires on [100] Si, fancy structures with a tapered shape resembling a tree were observed. They were called nanotrees. This is the first time that vertical growth has been ...
    • Single-crystalline metal oxide, resistive gas sensors advances and perspectives 

      Llobet Valero, Eduard; Navarrete, eric; Annanouch, F.E.; Alvarado, M.; Gonzalez, E.; Ramirez, J.L.; Romero, A.; Vilanova, Xavier; Domínguez Pumar, Manuel; Vallejos, S.; Gracia, Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Here we review recent results on the synthesis of single-crystalline metal oxide nanomaterials and their integration in resistive gas sensing devices. Emphasis is put on the integration of such nanomaterials in a wide ...
    • Sonochemical synthesis and stabilization of concentrated antimicrobial silver-chitosan nanoparticle dispersions 

      Francesko, Antonio; Petkova, Petya; Mendoza Gómez, Ernesto; Tzanov, Tzanko; Cano Fossas, Marta; Fernandes, Margarita M. (Wiley, 2017-08)
      Article
      Accés obert
      This work reports on a green synthetic route to produce concentrated aqueous dispersions of silver nanoparticles (AgNP) employing high-intensity ultrasound (US) and chitosan (CS) as a non-toxic reducing agent for Ag1 salts ...
    • Visible photoluminescence components of solution-grown ZnO nanowires: Influence of the surface depletion layer 

      Fan, J.; Güell, F.; Fàbrega Alsina, Carles; Fairbrother, A.; Andreu, T.; López Martínez, Antonio Miguel; Morante Lleonart, Joan Ramon; Cabot, A. (2012-09-13)
      Article
      Accés obert
      Arrays of electrodeposited ZnO nanowires (NWs) were used to illustrate the dependence of the ZnO visible photoluminescence (PL) emission on the extension of the surface depletion layer and obtain further insight into the ...