Exploració per tema "Nanotubs"

Ara es mostren els items 1-20 de 27

    • A compact noise model for carbon nanotube FETs 

      Landauer, Gerhard Martin; González Jiménez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés obert
      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
      Accés obert
      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 ...

    • Carbon nanotube FET process variability and noise model for radiofrequency investigations 

      Landauer, Gerhard Martin; González Jiménez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work focuses on process variability and noise in carbon nanotube field-effect transistors (CNFET) to obtain a compact model usable for radiofrequency (RF) design and simulations. CNFET figures of merit (FoM) are ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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
      Accés obert
      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, ...

    • Composites based on epoxy resins and poly(3-thiophene methyl acetate) nanoparticles: mechanical and electrical properties 

      Pérez Madrigal, Mª del Mar; Armelín Diggroc, Elaine Aparecida; Azambuja, Denise S.; Estrany Coda, Francesc; Alemán Llansó, Carlos (2014-09-18)
      Article
      Accés obert
      Conducting polymer nanocomposites (CPnC) have been prepared by loading different concentrations of poly(3-thiophene methyl acetate) (P3TMA) nanoparticles to an epoxy network. Therefore, the typical limitations of CPs ...

    • Diseño experimental de nanotubos de polímeros conductor obtenidos por recubrimiento electroquímico de nanofibras 

      Rodela Espada, Valentín (Universitat Politècnica de Catalunya, 2014-06-11)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      L’objectiu del projecte es obtenir nanotubs de polímer conductor PEDOT obtingut mitjançant un recobriment electroquímic de nanofibres. A partir de l’electrospinning obtenim fibres produïdes per diàmetres nanometrics emprant ...

    • 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
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • 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
      Accés obert
      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
      Accés obert
      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)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   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
      Accés obert
      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 variability analysis in carbon nanotube technology: a comparison with bulk CMOS in 6T SRAM scenario 

      García Almudéver, Carmen; Rubio Sola, Jose Antonio (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • Microelectromechanical resonators based on an all polymer/carbon nanotube composite structural material 

      Sousa, P.M.; Gutierrez, M.; Mendoza Gómez, Ernesto; Llobera, A.; Chu, V.; Conde, J.P. (2011-07-25)
      Article
      Accés obert
      Carboxylated multi-wall carbon-nanotubes (CNTs) monolayers are integrated on microfabricated all-polymer micro-electromechanical systems (pMEMS) resonator bridges on glass substrates. The structural layer of the MEMS bridges ...

    • Modelling viscoelastic behaviour of carbón nanotube-reinforced thermo-plastics 

      Otero Gruer, Fermín Enrique; Oller Martínez, Sergio Horacio; Martínez García, Javier; Salomón, Ramón Omar (Asociación Argentina de Mecánica Computacional, 2012)
      Text en actes de congrés
      Accés obert
      Carbon nanotubes (CNTs), since their discovery by Lijima (S. Lijima, Nature, 354:56-58 (1991)), are considered a new generation of reinforcement. Their "nano" size structure makes them potentially free of defects, which ...

    • Nanomatemàtiques: modelització matemàtica a la nanoescala 

      Myers, Timothy; Font Martínez, Francesc; Cregan, V.; MacDevette, M.M. (2014-11-03)
      Report de recerca
      Accés obert
      En aquest article exposem tres problemes estudiats recentment al grup de Matemàtica Industrial del Centre de Recerca Matemàtica, en els quals l'aproximació del continu resulta vàlida per a descriure fenòmens a la nanoescala: ...

    • Optomechanics using localized excitons in suspended carbon nanotubes 

      Morell Bennasser, Nicolás (Universitat Politècnica de Catalunya, 2014-09-10)
      Projecte Final de Màster Oficial
      Accés obert
      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 ...

    • Optomechanics with a hybrid carbon nanotube resonator 

      Tavernarakis, A.; Stavrinadis, A.; Nowak, A.; Tsioutsios, I.; Bachtold, Adrian (Nature, 2018-02-14)
      Article
      Accés obert
      In just 20 years of history, the field of optomechanics has achieved impressive progress, stepping into the quantum regime just 5 years ago. Such remarkable advance relies on the technological revolution of nano-optomechanical ...