Now showing items 41-60 of 93

  • Graphene-enabled wireless networks-on-chip 

    Llatser Martí, Ignacio; Abadal Cavallé, Sergi; Mestres Sugrañes, Albert; Cabellos Aparicio, Alberto; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    Graphene-enabled Wireless Communications (GWC) advocate for the use of graphene-based plasmonic antennas, or graphennas, which take advantage of the plasmonic properties of graphene to radiate electromagnetic waves in the ...
  • Graphene-induced crystallinity of bisphenol A polycarbonate in the presence of supercritical carbon dioxide 

    Gedler, Gabriel; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (Elsevier, 2013-11-01)
    Article
    Restricted access - publisher's policy
    Changes in the crystallinity of polycarbonate (PC) induced by the simultaneous presence of 0.5 wt% graphene nanoplatelets (GnP) and supercritical carbon dioxide (sc-CO2) were examined by means of Raman spectroscopy, WAXS, ...
  • H-2 physisorbed on graphane 

    Carbonell Coronado, Carmen; De Soto Borrera, Feliciano Carlos; Cazorla Silva, Claudio; Boronat Medico, Jordi; Gordillo Bargueño, Maria Carmen (2013-06)
    Article
    Open Access
    We study the zero-temperature phase diagrams of H2 adsorbed on the three structures predicted for graphane (chair, boat and washboard graphane), using a diffusion Monte Carlo technique. Graphane is the hydrogenated version ...
  • Impact of Vacancies on Diffusive and Pseudodiffusive Electronic Transport in Graphene 

    Cresti, Alessandro; Louvet, Thibaud; Ortmann, Frank; van Tuan, Dinh; Lenarczyk, Pawel; Huhs, Georg; Roche, Stephan (MDPI, 2013-04-08)
    Article
    Open Access
    We present a survey of the effect of vacancies on quantum transport in graphene, exploring conduction regimes ranging from tunnelling to intrinsic transport phenomena. Vacancies, with density up to 2%, are distributed at ...
  • Influencia del grafeno com nanoaditivo en una matriz de polipropileno 

    Perez Llanos, Germán Anibal (Universitat Politècnica de Catalunya, 2014-09)
    Master thesis
    Restricted access - author's decision
    A partir de la posibilidad de disponer de grafeno puro, muchos centros de investigación han dedicado grandes esfuerzos a estudiar sus propiedades y desplegar el potencial que parece tener en diversos campos. Las propiedades ...
  • Intensity dependences of the nonlinear optical excitation of plasmons in graphene 

    Constant, T. J.; Hornett, S. M.; Chang, D. E.; Hendry, E. (The Royal Society, 2017-02-20)
    Article
    Open Access
    Recently, we demonstrated an all-optical coupling scheme for plasmons, which takes advantage of the intrinsic nonlinear optical response of graphene. Frequency mixing using free-space, visible light pulses generates ...
  • Low density polycarbonate-graphene nanocomposite foams produced by supercritical carbon dioxide two-step foaming. Thermal stability 

    Gedler, Gabriel; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (Elsevier, 2016-05)
    Article
    Open Access
    The thermal stability of low density polycarbonate-graphene nanocomposite foams prepared by supercritical carbon dioxide two-step foaming was investigated. Unfilled polycarbonate foams showed improved thermal stabilities ...
  • Material-dependencies of the THz emission from plasmonic graphene-based photoconductive antenna structures 

    Suessmeier, Christoph; Abadal Cavallé, Sergi; Stock, Daniel; Schaeffer, Stephan; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    Graphene supports surface plasmon polaritons with comparatively slow propagation velocities in the THz region, which becomes increasingly interesting for future communication technologies. This ability can be used to realize ...
  • Materials emergents: els nous materials entren al laboratori 

    Busquets Pérez, Sendoa (Universitat Politècnica de Catalunya, 2014-06)
    Bachelor thesis
    Open Access
  • Microstructure, interfaces and properties of 3YTZP ceramic composites with 10 and 20 vol% different graphene-based nanostructures as fillers 

    Muñoz Ferreiro, Carmen; Morales Rodriguez, Ana; Rojas, Teresa Cristina; Jiménez Piqué, Emilio; López Pernía, Cristina; Poyato, Rosalía; Gallardo Lopez, Angela (2019-03-10)
    Article
    Restricted access - publisher's policy
    The graphene family comprises not only single layer graphene but also graphene-based nanomaterials (GBN), with remarkably different number of layers, lateral dimension and price. In this work, two of these GBN, namely ...
  • Mid-Infrared Plasmonic Biosensing with Graphene 

    Rodrigo, Daniel; Limaj, Odeta; Janner, Davide; Etezadi, Dordaneh; García de Abajo, Francisco Javier; Pruneri, Valerio; Altug, Hatice (Science, 2015-07-10)
    Article
    Open Access
    Infrared spectroscopy is the technique of choice for chemical identification of biomolecules through their vibrational fingerprints. However, infrared light interacts poorly with nanometric-size molecules. We exploit the ...
  • Multiplasmon Absorption in Graphene 

    Jablan, Marinko; Chang, Darrick E. (APS, 2015-06-10)
    Article
    Open Access
    We show that graphene possesses a strong nonlinear optical response in the form of multiplasmon absorption, with exciting implications in classical and quantum nonlinear optics. Specifically, we predict that graphene ...
  • Multi-valued logic circuits on graphene quantum point contact devices 

    Rallis, Konstantinos; Sirakoulis, Georgios; Karafyllidis, Ioannis; Rubio Sola, Jose Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    Graphene quantum point contacts (G-QPC) combine switching operations with quantized conductance, which can be modulated by top and back gates. Here we use the conductance quantization to design and simulate multi-valued ...
  • Nanopatterned Graphene on a Polymer Substrate by a Direct Peel-off Technique 

    Chen, T. L.; Ghosh, D. S.; Marchena, M.; Osmond, J.; Pruneri, Valerio (ACS Publications, 2015-02-24)
    Article
    Open Access
    : A graphene (Gr) on a polyimide (PI) polymer film (Gr−PI film), obtained by a direct peel-off technique, is proposed and investigated. Thanks to its high transparency, electrical conductivity, mechanical strength, and ...
  • Nonlinear dynamics in a graphene nanostructured device for energy harvesting 

    El Aroudi, Abdelali; Lopez Suarez, Miquel; Alarcón Gallo, Eduardo; Rurali, Riccardo; Abadal, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    Nonlinearities have been shown to play an important role in increasing the extracted energy of energy harvesting devices at the macro and micro scales. Vibration-based energy harvesting on the nano scale has also received ...
  • Nonlinear Plasmonic Sensing with Nanographene 

    Yu, Renwen; Cox, Joel D.; García de Abajo, Francisco Javier (APS, 2016-09-16)
    Article
    Open Access
    Plasmons provide excellent sensitivity to detect analyte molecules through their strong interaction with the dielectric environment. Plasmonic sensors based on noble metals are, however, limited by the spectral broadening ...
  • Polyetherimide foams filled with low content of graphene nanoplatelets prepared by scCO2 dissolution 

    Abbasi, Hooman; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (Multidisciplinary Digital Publishing Institute (MDPI), 2019-02-13)
    Article
    Open Access
    Polyetherimide (PEI) foams with graphene nanoplatelets (GnP) were prepared by supercritical carbon dioxide (scCO2) dissolution. Foam precursors were prepared by melt-mixing PEI with variable amounts of ultrasonicated GnP ...
  • Preparation and characterization of electrically conductive foams made of Polyethermide (PEI) filled with graphene nanoparticles 

    Abbasi, Hooman (Universitat Politècnica de Catalunya, 2014-07-09)
    Master thesis
    Restricted access - author's decision
    The aim of this study is to develop a novel multi-functional polymer nanocomposite for potential usage in aerospace. It is based on facile approach to produce microcellular PEI based foams reinforced with graphene nanoplatlets ...
  • Preparation of nanocomposite foams based on polysulfone and carbon-based nanoparticles using WVIPS 

    Yuceturk, Mustafa Kerem; Abbasi, Hooman; Antunes, Marcelo de Sousa Pais; Aydin, Suheyla; Velasco Perero, José Ignacio (2018)
    Conference lecture
    Open Access
  • Quantum nonlocal effects in individual and interacting graphene nanoribbons 

    Silveiro, Iván; Plaza Ortega, Juan Manuel; García de Abajo, Francisco Javier (Nature Publishing Group, 2015-01-30)
    Article
    Open Access
    We show that highly doped graphene ribbons can support surface plasmons at near-infrared frequencies when their width is in the nanometer range, leading to important nonlocal and finite quantum-size corrections, such as ...