Exploració per tema "Thin films"

Ara es mostren els items 21-40 de 77

    • Extremely narrow, sharp-peaked resonances at the edge of the continuum 

      Lukošiunas, Ignas; Grineviciute, Lina; Nikitina, Julianija; Gailevicius, Darius; Staliunas, Kestutis (2022-11-03)
      Report de recerca
      Accés obert
      We report a critical narrowing of resonances of a driven potential well, when their eigenfrequencies approach the edge of the continuum. The resonances also obtain unusual sharp-peak shapes at the continuum boundary. The ...

    • Fabrication and opto-electronic characterization of ultrathin gold films with a copper oxide seed 

      Barrantes, Jessica Jazmine Nicole (Universitat Politècnica de Catalunya, 2022-03-24)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      Realitzat a/amb:   Università degli Studi di Padova
      Ultrathin materials emerged as game changers for Optoelectronics industry for integrated circuits, transis- tors, solar cells, light emitting diodes, photoconductors, light crystal displays and many other applications. In ...

    • Fabrication and surface modification of PLLA films for cardiovascular applications 

      Norroy, Joe (Universitat Politècnica de Catalunya, 2014-02)
      Projecte/Treball Final de Carrera
      Accés obert
      Cardiovascular diseases have emerged as a major concern since they are the first cause of death in developed countries. The advent of percutaneous trans luminal coronary angioplasty consisted in an alternative to invasive ...

    • Fabrication of thin-film nanocomposite nanofiltration membranes incorporated with aromatic amine-functionalized multiwalled carbon nanotubes. Rejection performance of inorganic pollutants from groundwater with improved acid and chlorine resistance 

      Gholami, Sina; López Rodríguez, Julio; Rezvani, Alireza; Vatanpour, Vahid; Cortina Pallás, José Luís (2019-01-01)
      Article
      Accés obert
      A thin-film nanocomposite nanofiltration (TFN-NF) membrane was fabricated through blending a novel aromatic amine-functionalized multiwalled carbon nanotubes (AAF-MWCNTs) and an aliphatic amine-functionalized multiwalled ...

    • Fano-like resonances in nanostructured thin films for spatial filtering 

      Grineviciute, Lina; Nikitina, Julianija; Babayigit, Ceren; Staliunas, Kestutis (2021-03-29)
      Article
      Accés restringit per política de l'editorial
      Fano-like resonant coupling of electromagnetic radiation with planar waveguiding modes of nanostructured thin films is proposed and realized experimentally. Different from conventional Fano coupling to compact resonators ...

    • Front contact optimization of industrial scale CIGS solar cells for low solar concentration using 2D physical modeling 

      Delgado Sánchez, José María; López González, Juan Miguel; Orpella García, Alberto; Sánchez-Cortezón, Emilio; Alba, Maria D.; López López, Carmen; Alcubilla González, Ramón (2017-02-01)
      Article
      Accés obert
      Cu(In,Ga)Se2 (CIGS) technology is one of the best absorber materials with record efficiencies among photovoltaic thin-film technologies (22.3% at lab scale and 16% at large commercial module). Although research on this ...

    • Generació amb condicions estàtiques i dinàmiques de films de polímers conductors. Efecte en la electroactivitat i morfologia superficial 

      Sánchez i Jiménez, Margarita (Universitat Politècnica de Catalunya, 2012-06)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Poli(3,4-etilendioxitiofè) (PEDOT) i poli(N-metilpirrol) (PNMPy) homopolímers i sistemes tricapa formats per capes alternes d'aquests dos polímers conductors han estat sintetitzats electroquímicament per oxidació anòdica ...

    • Growth and physical properties of highly oriented La-doped (K,Na)NbO3 ferroelectric thin films 

      Vendrell Villafruela, Xavier; Raymond, Oscar; Ochoa Guerrero, Diego A.; García García, José Eduardo; Mestres, Lourdes (2015-02-27)
      Article
      Accés obert
      Lead-free (K,Na)NbO3 (KNN) and La doped (K,Na)NbO3 (KNN-La) thin films are grown on SrTiO3 substrates using the chemical solution deposition method. The effect of adding different amounts of Na and K excess (0-20 mol%) is ...

    • High dielectric constant donors and acceptors for organic photovoltaics 

      Vázquez Fernández, Naiara Ilía (Universitat Politècnica de Catalunya / Rijksuniversiteit Groningen, 2013)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Organic solar cells bear the potential to develop a long-term technology that is environmentally clean and economically promising for large-scale power generation. Thanks to higher absorption coefficient, organic materials ...

    • High hardness, low Young's modulus and low friction of nanocrystalline ZrW2 Laves phase and Zr1-xWx thin films 

      Horwat, David; Jiménez Piqué, Emilio; Pierson, J.F.; Migot, A.; Dehmas, M.; Anglada Gomila, Marcos Juan (2012-04)
      Article
      Accés restringit per política de l'editorial
      Zr1−xWx nanocrystalline films of Zr-W solid solutions and ZrW2 Laves phase were synthesized by magnetron co-sputtering. Large values of the H/E ratio up to 0.09 are observed for grain sizes in the nanometer range along ...

    • HOMO stabilisation in pi-Extended Dibenzotetrathiafulvalene derivatives for their application in OFETs 

      Geng, Yan; Pfattner, Raphael; Campos García, Antonio; Wang, Wei; Jeannin, Olivier; Hauser, Jürg; Puigdollers i González, Joaquim; Bromley, Stefan T.; Decurtins, Silvio; Veciana Miró, Jaume; Rovira Angulo, Concepció; Mas Torrent, Marta; Liu, Shixia (2014-05-15)
      Article
      Accés restringit per política de l'editorial
      Three new organic semiconductors, in which either two methoxy units are directly linked to a dibenzotetrathiafulvalene (DB-TTF) central core and a 2,1,3-chalcogendiazole is fused on the one side, or four methoxy groups are ...

    • Interactions of cryoprotective agents with phospholipid membranes - A Langmuir monolayer study 

      Raju, Rekha; Torrent Burgués, Juan; Bryant, Gary (2020-09)
      Article
      Accés obert
      The influence of four common cryoprotectants (dimethyl sulfoxide, glycerol, ethylene glycol and dimethylformamide) on monolayers of four common phospholipids (DPPC, DOPC, POPC and POPE) have been studied using Langmuir ...

    • Investigating aptamer-modified thin metal films for small-molecule detection 

      Sekhon, Seerat (Universitat Politècnica de Catalunya, 2023-09-12)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      Realitzat a/amb:   Eidgenössische Technische Hochschule Zürich
      Electrochemical sensors have shown significant promise in advancing point-of-care diagnostics, as exemplified by commercialization of glucometers. Majority of these sensors are label-free and modulate the electrical ...

    • IR-study of a-SiCx:H and a-SiCxNy:H films for c-Si surface passivation 

      Vetter, Michael; Martín García, Isidro; Orpella García, Alberto; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Alcubilla González, Ramón (2004-03)
      Article
      Accés restringit per política de l'editorial
      Amorphous intrinsic silicon carbide (a-SiCx:H(i)) films and amorphous silicon carbonitride (SiCxNy:H) films have been deposited by plasma enhanced chemical vapor deposition from CH4/SiH4/(N2) plasma on n-type (1.5 O cm) ...

    • Langmuir and Langmuir-Blodgett films revisited 

      Torrent Burgués, Juan (2016-06-22)
      Report de recerca
      Accés obert
      The Langmuir and Langmuir-Blodgett (LB) technique has been applied for a long time. It exist several books and reviews on the subject. Also, a big number of works and papers have been made. This work only intends to afford ...

    • Langmuir films study on lipid-containing artificial tears 

      Torrent Burgués, Juan (2016-04-01)
      Article
      Accés obert
      Lipid-containing artificial tears are a type of artificial tears that use lipid components in order to restore the lipid layer of the tear film. One of these components is lecithin which can be applied in spray solutions ...

    • Lipid artificial tears at a mimetic ocular interface 

      Torrent Burgués, Juan; Hoyo Pérez, Javier; Tzanov, Tzanko (2021-08)
      Article
      Accés obert
      We studied the behaviour of three lipid tear products, commercialised by the same brand, as Langmuir films at the air/liquid interface to simulate the ocular environment. No significant differences were observed in the ...

    • Low temperature direct growth of graphene patterns on flexible glass substrates catalysed by a sacrificial ultrathin Ni film 

      Marchena, Miriam; Janner, Davide; Chen, Tong Lai; Finazzi, Vittoria; Pruneri, Valerio (OSA, 2016-08-01)
      Article
      Accés obert
      Direct deposition of graphene on substrates would avoid costly, time consuming and defect inducing transfer techniques. In this paper we used ultrathin films of Ni, with thickness ranging from 5 to 50 nm, as a catalytic ...

    • Microcrystalline silicon thin film transistors obtained by hot-wire CVD 

      Puigdollers i González, Joaquim; Dosev, D; Orpella García, Alberto; Voz Sánchez, Cristóbal; Peiro, D; Bertomeu Balaguero, Joan; Marsal, L F; Pallarés, J; Andreu Batallé, Jordi; Alcubilla González, Ramón (1999-12)
      Article
      Accés restringit per política de l'editorial
      Polysilicon thin film transistors (TFT) are of great interest in the field of large area microelectronics, especially because of their application as active elements in flat panel displays. Different deposition techniques ...

    • Millora de les propietats de films multicapa mitjançant la inclusió de Nanocompòsits de PA6 

      LLoret Fortuny, Elsa (Universitat Politècnica de Catalunya, 2013-09)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      L’aplicació de materials multicapa per l’envasament de productes ha representat un gran avenç pel que fa a la conservació d’aliments i a la seva acceptació per part del consumidor. Aquesta tecnologia permet allargar la ...