Browsing by Subject "Nanotubes"

Now showing items 1-20 of 30

    • 4He adsorbed outside a single carbon nanotube 

      Gordillo Bargueño, Maria Carmen; Boronat Medico, Jordi (2012-10-08)
      Article
      Open Access
      The phase diagrams of 4He adsorbed on the external surfaces of single armchair carbon nanotubes with radii in the range 3.42–10.85 Å are calculated using the diffusion Monte Carlo method. For nanotubes narrower than a ...

    • A compact noise model for carbon nanotube FETs 

      Landauer, Gerhard Martin; González Jiménez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Conference report
      Restricted access - publisher's policy
      This paper focuses on the development of a compact noise model for radiofrequency (RF) carbon nanotube field-effect transistors (CNFET). The noise mechanisms in these devices are discussed and the impact of the different ...

    • A hydrodynamic model for particle beam-driven plasmon wakefield in carbon nanotubes 

      Martín-Luna, Pablo; Resta-López, Javier; Perera, Aravinda (Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
      Conference report
      Open Access
      Charged particles moving through a carbon nanotube may be used to excite electromagnetic modes in the electron gas produced by π and σ orbitals in the cylindrical graphene shell that makes up a nanotube wall [1]. This ...

    • Atomic monolayer deposition on the surface of nanotube mechanical resonators 

      Tavernarakis, Alexandros; Chaste, Julien; Eichler, Alexander; Ceballo, Gustavo; Gordillo Bargueño, Maria Carmen; Boronat Medico, Jordi; Bachtold, Adrian (2014-05-14)
      Article
      Open Access
      We study monolayers of noble gas atoms (Xe, Kr, Ar, and Ne) deposited on individual ultraclean suspended nanotubes. For this, we record the resonance frequency of the mechanical motion of the nanotube, since it provides a ...

    • Capes primes, transparents i flexibles de nanotubs de carboni: impedància elèctrica i xarxes aleatòries 

      Pérez Puigdemont, Jordi (Universitat Politècnica de Catalunya, 2010-06-04)
      Master thesis (pre-Bologna period)
      Open Access

    • Carbon nanotube growth process-related variablity in CNFET's 

      García Almudéver, Carmen; Rubio Sola, Jose Antonio (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Conference report
      Restricted access - publisher's policy
      In silicon bulk CMOS technology the variability of the device parameters is a key drawback that may be a limiting factor for further miniaturizing nodes. Novel nanoscale beyond- CMOS devices are being studied such as carbon ...

    • CdS quantum dots as a scattering nanomaterial of carbon nanotubes in polymeric nanocomposite sensors for microelectrode array behavior 

      Muñoz, Jose; Bastos Arrieta, Julio Alonso; Muñoz, Maria; Muraviev, Dmitri; Céspedes, Francisco; Baeza, Mireia (Springer, 2015-10-15)
      Article
      Open Access
      This work is focused on evaluating the direct electrochemical effect of semi-conducting nanocrystals when they are integrated in bulky nanocomposite sensors based on multiwalled carbon nanotubes (MWCNTs). For this aim, ...

    • Characterization of epoxi based composite with Carbon Nanotubes 

      Garrido Pacheco, Mariano (Universitat Politècnica de Catalunya, 2012-07-20)
      Master thesis
      Restricted access - author's decision
      This dissertation exposes the characterisation of a nanocomposite made of epoxy resin with carbon nanotubes. The project involves the production of the materials and the fabrication of the specimens to be tested thermally ...

    • 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 ...

    • Estudi per ressonµancia de spin electrònic (ESR) de la puresa dels nanotubs de carboni 

      Abiad Monge, Aida (Universitat Politècnica de Catalunya, 2009-12)
      Master thesis (pre-Bologna period)
      Open Access
      Abstract Due to their unique properties, the single walled carbon nanotubes (SWNTs) are very interesting candidates for the development of new electronic devices and sensors. In order to be able to obtain devices with ...

    • Flexible, transparent electrodes using carbon nanotubes 

      Ferrer Anglada, Núria; Iqbal, Muhammad Zahir; Pérez Puigdemont, Jordi; Figueras, Jordi; Roth, Segmar (2012-12-10)
      Article
      Open Access
      We prepare thin single-walled carbon nanotube networks on a transparent and flexible substrate with different densities, using a very simple spray method. We measure the electric impedance at different frequencies Z(f) in ...

    • High-frequency impedance of single-walled carbon nanotube networks on transparent flexible substrate 

      Iqbal, Muhammad Zahir; Pérez Puigdemont, Jordi; Eom, Jonghwa; Ferrer Anglada, Núria (2014-12-01)
      Article
      Restricted access - publisher's policy
      Transparent and flexible networks with randomly distributed single-walled carbon nanotubes (SWCNTs) are emerging as novel materials for various applications, particularly as electronic materials. We investigate the ...

    • Impedance characterization of transparent and flexible carbon nanotubes thin film networks 

      Iqbal, Muhammad Zahir; Eom, J.; Pérez Puigdemont, Jordi; Ferrer Anglada, Núria (2011)
      Conference report
      Restricted access - publisher's policy

    • Intermatrix synthesis as a rapid, inexpensive and reproducible methodology for the in situ functionalization of nanostructured surfaces with Quantum Dots 

      Bastos Arrieta, Julio Alonso; Muñoz, Jose; Stenbock-Fermor, Anja; Muñoz, Maria; Muraviev, Dmitri; Céspedes, Francisco; Tsarkova, Larisa A.; Baeza, Mireia (2016-02-02)
      Article
      Open Access
      Intermatrix Synthesis (IMS) technique has proven to be a valid methodology for the in situ incorporation of quantum dots (QDs) in a wide range of nanostructured surfaces for the preparation of advanced hybrid-nanomaterials. ...

    • Isothermal vulcanization and nonisothermal degradation kinetics of XNBR/Epoxy/XNBR-g-Halloysite Nanotubes (HNT) nanocomposites 

      Paran, Seyed Mohamad Reza; Naderi, Ghasem; Movahedifar, Elnaz; Jouyandeh, Maryam; Formela, Krzysztof; Colom Fajula, Xavier; Cañavate Ávila, Francisco Javier; Saeb, Mohammad Reza (Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-27)
      Article
      Open Access
      The effect of several concentrations of carboxylated nitrile butadiene rubber (XNBR)functionalized halloysite nanotubes (XHNTs) on the vulcanization and degradation kinetics ofXNBR/epoxy compounds were evaluated using ...

    • Laser heating and destruction of carbon nanotubes 

      Villà Montero, Marc (Universitat Politècnica de Catalunya / Luleå Tekniska Universitet, 2013)
      Bachelor thesis
      Open Access
      Covenantee:   Luleå tekniska universitet
      Research on carbon materials is, nowadays, the most developed field within the nanotechnology. Graphene and carbon nanotubes (CNTs) are the materials studied the most in this domain due to their astonishing mechanical, ...

    • Layering transition in superfluid helium adsorbed on a carbon nanotube mechanical resonator 

      Noury, Adrien; Vergara Cruz, Jorge; Morfin, Pascal; Plaçais, Bernard; Gordillo Bargueño, Maria Carmen; Boronat Medico, Jordi; Balibar, Sébastien; Bachtold, Adrian (American Institute of Physics (AIP), 2019-04-23)
      Article
      Open Access
      Helium is recognized as a model system for the study of phase transitions. Of particular interest is the superfluid phase in two dimensions. We report measurements on superfluid helium films adsorbed on the surface of a ...

    • Manufacturing and characterization of printed strain gauges based on carbon nanotubes 

      Arreba Garcia-Abad, Andrea (Universitat Politècnica de Catalunya, 2010-05-01)
      Master thesis
      Restricted access - confidentiality agreement

    • Manufacturing variability analysis in carbon nanotube technology: a comparison with bulk CMOS in 6T SRAM scenario 

      García Almudéver, Carmen; Rubio Sola, Jose Antonio (2011)
      Conference report
      Restricted access - publisher's policy
      In silicon bulk CMOS technology the variability of the device parameters is a key drawback that may be a limiting factor for further miniaturizing nodes. New nanoscale beyond-CMOS devices are being studied such as carbon ...

    • Optomechanics using localized excitons in suspended carbon nanotubes 

      Morell Bennasser, Nicolás (Universitat Politècnica de Catalunya, 2014-09-10)
      Master thesis
      Open Access
      Carbon nanotubes have generated a huge research interest in the last two decades. It can be seen as a wire with a diameter of about 1 nm. Because of this reduced dimensionality, nanotubes offer unique scientific and ...