Now showing items 21-40 of 113

    • CuGaS2 and CuGaS2–ZnS porous layers from solution-processed nanocrystals 

      Berestok, Taisiia; Guardia, Pablo; Estradé, Sònia; Llorca Piqué, Jordi; Peiró, Francesca; Cabot Codina, Andreu; Brock, Stephanie L. (2018-04-05)
      Article
      Open Access
      The manufacturing of semiconducting films using solution-based approaches is considered a low cost alternative to vacuum-based thin film deposition strategies. An additional advantage of solution processing methods is the ...
    • Cytotoxicity and antibacterial activity of selected ananoparticles 

      Ribera Puig, Joan (Universitat Politècnica de Catalunya, 2017-07-04)
      Bachelor thesis
      Restricted access - author's decision
      Nowadays, nanotechnologies are ones of the newest technologies, which a wide range of applications such as in medicine, biotechnology, electronics, energy or sensing. However, the efficiency of nanomaterials or at least ...
    • Decoration of carbon nanostructures with metal sulfides by sonolysis of single-molecule precursors 

      Estrada, Ana Cristina; Mendoza Gómez, Ernesto; Trindade, Tito (2014-07-01)
      Article
      Restricted access - publisher's policy
      Carbon nanostructures have emerged in recent decades as uniquely convenient materials for a number of technologies. Some of their envisaged applications require hybrid nanostructures that result from the coupling of ...
    • Desarrollo y caracterización de nanocompuestos híbridos 

      Rodríguez Campillo, Jaime (Universitat Politècnica de Catalunya, 2014-06-10)
      Bachelor thesis
      Restricted access - author's decision
    • Desenvolupament de tèxtils amb propietats piezoelèctriques basats en fibres de PVDF 

      Amills Valenzuela, Maria Isabel (Universitat Politècnica de Catalunya, 2018-06-08)
      Bachelor thesis
      Restricted access - author's decision
      Aquest treball parteix d’un estudi previ sobre la generació d’energia mitjançant nanomembranes de PVDF amb dopants. En el present projecte, s’han estudiat les propietats piezoelèctriques d’aquestes membranes a partir ...
    • Design strategies for ceria nanomaterials: untangling key mechanistic concepts 

      Xu, Yuwen; Mofarah, Sajjad S.; Mehmood, Rashid; Cazorla Silva, Claudio; Koshy, Pramod; Sorrell, Charles C. (2021)
      Article
      Open Access
      The morphologies of ceria nanocrystals play an essential role in determining their redox and catalytic performances in many applications, yet the effects of synthesis variables on the formation of ceria nanoparticles of ...
    • Diffusional approach on electrospun PLLA membranes for caffeine delivery 

      Serafini Immich, Ana; Tornero García, José Antonio; Cano Casas, Francesc; Lis Arias, Manuel José (Book publisher international, 2021-05-07)
      Part of book or chapter of book
      Restricted access - publisher's policy
      One of the great advantages of electrospun fibers is the large tridimensional area produced, capable of storing any type of material. The aim of our investigation is to study the electrospinning technique to produce polymer ...
    • Doping of solution-processed two-dimensional transition metal dichalcogenides 

      Esteve i Cantero, Marc (Universitat Politècnica de Catalunya, 2021-10-31)
      Master thesis
      Open Access
      Covenantee:   École polytechnique fédérale de Lausanne
      Semiconducting transition metal dichalcogenides (TMDs) such as MoS2, WSe2 or WS2 have attracted a lot of interest in recent years because of their outstanding optoelectronic properties including tunable bandgap or strong ...
    • Dynamics of fast pattern formation in porous silicon by laser interference 

      Pelaez de Fuentes, Ramon Javier; Khun, Timo; Vega Lerín, Fidel; Afonso Rodriguez, Carmen Nieves (2014-10-24)
      Article
      Open Access
      Patterns are fabricated on 290 nm thick nanostructured porous silicon layers by phase-mask laser interference using single pulses of an excimer laser (193 nm, 20 ns pulse duration). The dynamics of pattern formation is ...
    • Efecto de la orientación cristalina en la dureza del carburo de wolframio 

      Verge Estefanía, Carmen (Universitat Politècnica de Catalunya, 2014-03)
      Master thesis (pre-Bologna period)
      Open Access
      La nanoindentación es una técnica empleada en la caracterización de las propiedades mecánicas (dureza y módulo de Elasticidad) de pequeños volúmenes y la activación de diferentes mecanismos de deformación, tales como líneas ...
    • Enhanced thermoelectric performance of n-type bi2se3 nanosheets through sn doping 

      Li, Mengyao; Zhang, Yu; Zhang, Ting; Zuo, Yong; Xiao, Ke; Arbiol, Jordi; Llorca Piqué, Jordi; Liu, Yu; Cabot, Andreu (2021-07-14)
      Article
      Open Access
      The cost-effective conversion of low-grade heat into electricity using thermoelectric devices requires developing alternative materials and material processing technologies able to reduce the currently high device manufacturing ...
    • Estudio de la influencia del uso de la nanosílice en las propiedades del hormigón. 

      Montes Aceituno, Elena (Universitat Politècnica de Catalunya, 2012-05-18)
      Master thesis (pre-Bologna period)
      Restricted access - confidentiality agreement
    • Estudio del efecto de los escalones superficiales en la nanoindentación del cobre 

      Galceran Oms, Laura (Universitat Politècnica de Catalunya, 2017-05)
      Master thesis
      Open Access
      En esta memoria se pretende recoger los resultados obtenidos en las simulaciones numéricas de nanoindentación realizadas durante el proyecto de final del Máster de Ciencia e Ingeniería de materiales, realizado en la UPC. ...
    • Excess protons in mesoscopic water-acetone nanoclusters 

      Semino, Rocío; Martí Rabassa, Jordi; Guàrdia Manuel, Elvira; Laria, Daniel (2012-11-19)
      Article
      Open Access
      We carried out molecular dynamics simulation experiments to examine equilibrium and dynamical characteristics of the solvation of excess protons in mesoscopic, [m:n] binary polar clusters comprising m = 50 water molecules ...
    • Extraction of microstructural parameters from sculptured thin films nanoindentation 

      Gaillard, Yves; Jiménez Piqué, Emilio; Oliva Ramírez, Manuel; Jiménez Rico, Manuel; Gonzalez Elipe, Agustin R. (Elsevier, 2021-11-15)
      Article
      Open Access
      This work deals with the indentation analysis of nanocolumnar thin films and the difficulties encountered to deduce relevant mechanical parameters by this methodology. SiO2 thin films prepared by physical vapour oblique ...
    • Functional hydrogels for energy and (bio)engineering applications 

      Ikraan, Mahamed (Universitat Politècnica de Catalunya, 2021-02-11)
      Master thesis
      Open Access
      Multifunctional biomaterials as energy storage devices, biosensors as well as scaffolds are of great interest due to their tunable properties. In this project, an ionically crosslinked conductive hydrogel is prepared of ...
    • Functionalization of screen-printed electrodes with grape stalk waste extract-assisted synthesized silver and gold nanoparticles: perspectives of electrocatalytically enhanced determination of uranyl ion and other heavy metals ions 

      Torres Rivero Andrade, Karina Victoria Alejandra; Florido Pérez, Antonio; Martí Gregorio, Vicenç; Bastos-Arrieta, Julio (2023-03-15)
      Article
      Open Access
      Recently, nanotechnology and nanoparticles (NPs) such as AgNPs and AuNPs have become important in analytical chemistry due to their great potential to improve the performance of electrochemical sensors. In this work, Ag ...
    • Functionally graded polyurethane/cellulose nanocrystal composites 

      Natterodt, Jens; Meesorn, Worarin; Zoppe, Justin Orazio; Weder, Christoph (2018-06)
      Article
      Open Access
      The preparation and investigation of functionally graded polymer nanocom-posites, which have a concentration gradient of cellulose nanocrystals (CNCs) along one direction, is reported here. As a test bed, a series of ...
    • Grafting polymers from cellulose nanocrystals: synthesis, properties, and applications 

      Wohlhauser, Sandra; Delepierre, Gwendoline; Labet, Marianne; Morandi, Gaëlle; Thielemans, Wim; Weder, Christoph; Zoppe, Justin Orazio (American Chemical Society (ACS), 2018-08-28)
      Article
      Open Access
      Over the past 10 years, the grafting of polymers from the surface of cellulose nanocrystals (CNCs) has gained substantial interest in both academia and industry due to the rapidly growing number of potential applications ...
    • Growth and thermal stability of TiN/ZrAlN: Effect of internal interfaces 

      Yalamanchili, Kumar; Wang, Fei; Aboulfadl, Hisham; Barrirero, Jenifer; Rogstrom, Lina; Jiménez Piqué, Emilio; Mücklich, F.; Tasnadi, Ferenc; Odén, Magnus; Ghafoor, N (2016-12-01)
      Article
      Open Access
      Wear resistant hard films comprised of cubic transition metal nitride (c-TMN) and metastable c-AlN with coherent interfaces have a confined operating envelope governed by the limited thermal stability of metastable phases. ...